CD m r- » o c 5 2 O > C o O c 70 OF YOSEMITE NATIONAL PARK SPECIAL ISSUE YOSEMITE NATURE NOTES From the collection of the y o s e m i t e NATURK NOTF.S Since 1922, the monthly publication of the National Park Service and the Yosemite Natural History Association in Yosemite National Park. Vol. XXXV No. 5 By Richard P. Ditton and Donald E. McHenry soC\k^ In cooperation with the National Park Service. CONTENTS 63 Welcome 64 A Brief Story of Yosemite 66 How To Use This Guide Tours: (road pose indicator in parentheses) 67 Yosemite Valley from Park Boundary on Merced Road ("V") 79 Yosemite Valley to Wawona, and South Entrance ("W") 83 Mariposa Grove of Giant Sequoias ("B") 8 5 Chinquapin to Glacier Point ("G") 92 Yosemite Valley to Park Boundary at Carl Inn (Crane Flat Road) ("C") 95 Crane Flat to Tioga Pass ("T") 103 Interesting Points Between Merced and Yosemite National Park 108 Interesting Points Between Fresno and Yosemite National Park 1 1 1 Some Wildlife and Plants of Yosemite National Park WELCOME John C. Preston On behalf of the National Park Ser- vice I take pleasure in welcoming you as a visitor to Yosemite National Park. I know that your visit was planned to afford you and your party a unique and happy experience in this, one of the world's outstanding scenic areas. It is the purpose of this booklet to help you realize to the utmost the pleasures of this trip. Many will find time or in- clination for seeing the park from auto roads only. Under these circumstances the use of this guide will bring a fuller understanding and appreciation of the essentials of the magnificent scenery which can be seen from the highway. For those who are disposed to explore the wonders of Yosemite further, you are invited to travel along the high country trails and spend your nights camping out under the stars. In this manner will you be able to gain a more intimate knowledge of the park and its many superlative features. By this experience one will more fully understand and ap- preciate the fragile nature of a wilderness area. Detailed trail guides and maps to help you are available in the park. This booklet is intended to help you learn more about Yosemite. It is based on the combined experience and knowledge of the park gained by Richard P. Ditton of the Yosemite Park and Curry Company through 14 years of residence in the area, and that of Donald E. McHenry, Park Naturalist for over 9 years, assisted extensively by members of the naturalist staff, especially Douglass H. Hubbard, Wayne W. Bryant, Ruth Glass and Helen Doty as well as by Laurence V. Degnan, and by helpful suggestions from National Park Service and Company officials. v«k c VTu\^r t v V \ John C. Preston, Superintendent 64 YOSEMITE NATURE NOTES A BRIEF STORY OF YOSEMITE Yoscmite National Park, one of our 28 scenic and scientific national parks and one of some iso areas administered by the National Park Service, is world fam- ous for the scenic grandeur of Yosemite Valley and its high Sierra country. It embraces about 1200 square miles with elevations ranging from foothills to al- pine peaks over 13,000' high. Such differ- ences in elevation account for the zone- like distribution of the 17 evergreens and 18 broad-leaf trees making up Yosemite's forests and to a degree its wildlife also. Deer are especially abundant in Yosemite Valley where they, with the bear, are often mistaken for tame animals. They are dangerous and park regulations for- bid feeding them in the park. Yosemite Valley was probably discov- ered by William Penn Abrams in 1849 during the gold rush days. It later came into national prominence through the 185 5 reports of Dr. Lafayette H. Bun- nell of the Mariposa Battalion under Major James D. Savage, and the extended writings of James M. Hutchings, John Muir, Starr King and many others who worked for its preservation. Because of growing public interest, John Conness, Senator from California, introduced into the Congress in 1864 a bill to set aside Yosemite Valley and the Mariposa Grove of Big Trees as the Yosemite Grant. The bill was passed and signed by President Abraham Lincoln. Here was the first practical application of what was to grow into our great National Park Sys- tem of today. It was given to the State of California to administer until 190 5 when it was receded to the federal gov- ernment for incorporation in Yosemite National Park which had been established in the surrounding country by Congress in 1890. Yosemite National Park was first administered by the U. S. Army but with the establishment of the Na- tional Park Service as a bureau of the U. S. Department of the Interior in 1916, administration passed to civilian hands. Today the visitors' contacts with this Service are largely through uni- formed park rangers and naturalists, whose duties are to protect, preserve and interpret the park under the supervision of the park superintendent. The story of the formation of Yosem- ite Valley goes back some two hundred million years when this land was beneath the sea. As it subsequently arose out of the sea it was covered with layers of sediments many thousands of feet thick, the remnants of which are seen today as greatly changed rocks in the foothills and on some of the park's highest peaks. The granites which now make up most of Yosemite National Park's rocks welled up underneath this old sea deposit as molten rock which cooled slowly as the sea deposits eroded away. As the Sierra tilted westward through three stages of uplift, rivers established courses down this slope wearing successively deeper valleys into the granite. About one mil- lion years ago the third and last deep and steepsided "V"-shaped river valley was invaded at separate times by three ice age glaciers which carved the valley into its present "U"-shaped form. The first two glaciers were 3000 to 4000 feet deep and extended as far as El Portal. The third and last glacier, filling only about a third of the depth of the valley, drop- ped its load of rocks and debris at a point between El Capitan and Bridalveil Fall. This made a dam which backed up the water from the melting ice to form Ancient Lake Yosemite, 5*2 miles long and perhaps as much as two thousand feet deep in the area of Camp Curry. As the lake filled with sediment the present level floor of the valley came into being. The first tourist party came to Yo- semite Valley in 185 5 on horseback over old Indian trails. It was not until 1874 AUTO TOUR 65 that a toll road, the Coulterville Road, was built, allowing stage travel to the valley floor. It was followed within a month by a competing toll road, the old Big Oak Flat Road. In the autumn of 1874 Washburn, Chapman, Coffman and Company received permission to ex- tend their toll road from Wawona to the valley, thus completing the road from Mariposa, the first from the south. In 1877 Coffman sold his interests and the company became the Yosemite Stage and Turnpike Company, the first organized stageline in Yosemite. During the 1880's the Nevada Stage Company ran stages from Stockton to Yosemite Valley via Milton and the old Big Oak Flat Road. Scheduled stage runs over this route end- ed in 188 8, although there was irregular stage coach travel over this road past the turn of the century. The days of the stage coach were num- bered with the building of the Yosemite Valley Railroad in 1907 from Merced to El Portal. Upl)irrts--e^mpletion^ the rail- road company built a wagon roacTTror the railhead to the Coulterville Road in Yosemite Valley so that horse-drawn stages could carry train passengers into the park. This was when El Portal — the portal — received its name. In 1913 stage companies operating in and to the park established the then famous Horseshoe Route running from Raymond to Yosemite Valley and return to Merced. Another well-known stage circuit was the Triangle Route, operated from El Portal past Big Meadows to the Tuolumne Grove of Big Trees and then via the old Big Oak Flat Road to Yo- semite Valley. These several stage routes came to an end with the consolidation and reorganization of transportation and hotel accommodations in the park in 192 5 under a corporation that is known today as the Yosemite Park and Curry Com- pany. The transportation division of this company operates bus stages throughout the park and between the park, Merced, Fresno and Lake Tahoe under franchises with the U. S. Department of the Inter- ior, the California Public Utilities Com- mission and the Interstate Commerce Commission. This division still uses the old name, Yosemite Transportation Sys- tem, formerly identified with the trans- portation department of the old Desmond Company. The building of the Merced Ail-Year Highway in 1926, the growth of mass automobile travel and the subsequent loss of. passenger and freight revenue, led the Yosemite Valley Railroad to aban- donment in 1945. In the travel year of Imost a million visitors like your- selves came to the park, mostly by pri- vate automobile. For you there are some 217 miles of public roads to various parts of the park and about 750 miles of trails to permit you to enjoy the wilderness features of Yosemite. It is with your pleasure in mind that this self-guiding auto tour booklet has been prepared, that you may have greater opportunity to ap- preciate, enjoy, and protect the unique scenic wilderness values of Yosemite Na- tional Park. Early Touring in Yosemite Valley 66 YOSEMITE NATURE NOTES HOW TO USE THIS GUIDE This booklet describes the more important points along the high- ways in Yosemite National Park and along the roads between Merced, Fresno and the park. To get the greatest enjoyment from this self-guided trip, travel leisurely — drive slowly and carefully. In the left hand margin of the text is a series of letters and num- bers which correspond to post markers with white letters and numbers identifying points of interest along the highway. The letters repre- sent the particular roads as follows: "V" stands for Yosemite Valley. "W" the Wawona Road to the South Entrance, "B" the Mariposa Grove of Giant Sequoias, "G" the Glacier Point Road from Chinquapin, "C" the Crane Flat Road to the park boundary at Carl Inn (Highway 120), and "T" the Tioga Road from Crane Flat to Tioga Pass which leads to the other side of the crest of the Sierra Nevada. Look at "Contents" for the proper page. The mileage shown in parentheses between par- agraphs gives the distance between successive points driving either way. Using either or both systems will enable you to follow this guide successfully. Where your travel reverses the order given in the guide, remember that this will also reverse directions as given, i.e., right be- comes left, ahead becomes behind, opposite side becomes near side, etc. The guides to interesting points along the Merced Road and the Fresno Road are on pages 103 and 108, respectively. Along these roads outside the park you will be guided 6nly by the distances given between points. A brief description of the wildlife and plants in the park is given on page 110. STOP ONLY AT PARKING AREAS OR OFF THE ROAD AN AUTOMOBILE ACCIDENT WILL SPOIL YOUR TRIP AUTO TOUR 67 YOSEMITE VALLEY FROM PARK BOUNDARY ON MERCED ROAD (Total driving distance 30 miles) Keep to tljc left at all major intersection!: in the valley. Map of Yosemitc Valley pages 86 and 87. Y PARK BOUNDARY. Yosemite Na- - tional Park, like our other national ■ parks, was established to preserve an area in as primitive a wilderness con- dition as possible for the enjoyment by the people for all time. Yosemite is fam- ous for its glacier-sculptured scenery. In contrast to the practices in national for- ests, no lumbering, hunting or mining is allowed in national parks. Yosemite is a wildlife preserve where wild animals may be seen roaming at large. Yosemite's modern history began in the days of the '49ers, although Indians lived here pre- viously. The walls of the Merced Canyon here, like the walls of Yosemite Valley, are granite. This granite was originally molten rock which was forced up be- neath older rocks now worn away. (For a guide to points of interest along the road between Yosemite Nation- al Park and Merced, see page 103.) V 2 Sierra Black Bear ARCH ROCK ENTRANCE STA- TION. There are 4 entrance stations in Yosemite where park rangers furnish information and collect visitor- use fees. This money is not used for op- erating the park but is deposited directly in the U. S. Treasury. Additional detailed information is available at park head- quarters and the Yosemite Museum. OLD COULTERVILLE ROAD. On the left the highway is joined by the old Coulterville Road, the first road into Yosemite Valley. (Read description in W-4, page 80.) V 3 V 4 California Mule Deer CASCADE FALLS. In the spring and early summer you will have from here a fine view of Cascade Falls. The falls have a drop of approxi- mately 500 feet. (Read description under C-3, page 93.) 68 YOSEMITE NATURE NOTES V JUNCTION WITH THE BIG OAK - FLAT ROAD. The Big Oak Flat ' Road which takes off here is des- cribed under C-l, page 92. (Drive straight ahead at next intersection) Y VALLEY VIEW. From Valley View you see the "gates" of the valley, ' formed by El Capitan and Cathed- ral Rocks. In early summer the scene is framed by fragrant blossoms of azalea, the shrubs which line the river bank. The trees of the forest in the valley are principally two dominant evergreens, the ponderosa pine and the incense-cedar, with a scattering of white fir, Douglas- fir and a few sugar pine. In the meadows grow the California black oak (source of food for the now departed Yosemite Indians), black cottonwood and white alder. The last two trees are common along the streams together with the Pa- cific dogwood. The rocky slopes at the base of the cliffs are covered with the evergreen live oaks, as well as a scattering of bigleaf maples and California laurel. Although the incense-cedar, because of its red bark, is frequently mistaken for "redwood," no giant sequoias grow native on the floor of the valley. A few young sequoias, notably a tree near the entrance of the Yosemite Museum, have been transplanted. (For further information on trees read "Broadleaved Trees of Yo- semite" and "Cone-bearing Trees of Yo- semite" available at the museum and gift shops.) V EL CAPITAN MORAINE AND _ JUNCTION OF OLD BIG OAK ' FLAT ROAD. The low ridge in the forest extending towards the river is a glacial deposit or "moraine" formed by the most recent ice-age glacier. As the ice melted back this moraine made a dam to help form Ancient Lake Yosemite which was between one and two thous- and feet deep at the upper end of the valley and was 5 Yi miles long. The lake gradually filled in with sediments to form the present level valley floor. The road on the other side of the highway is a section of the Old Big Oak Flat Road, now abandoned. Y EL CAPITAN. Read description q under V-32, page 76. Features seen from Valley View AUTO TOUR 69 y OLD STAGECOACH ROAD. _ You can turn back the pages of time ' by driving west over this section of the original stagecoach road which skirts the base of El Capitan. This is a one way loop drive from this point on the oppo- site side of the highway and continuing for about Va of a mile back to the main highway. Except for an oiled surface this road is little changed from stagecoach days. V SENTINEL ROCK, THE THREE - Q BROTHERS, AND EL CAPITAN. ' " As you pass El Capitan you will see the Three Brothers on your left. The highest of the rocks, Eagle Peak, is 3,773 feet above the valley floor, it being the highest point on the north rim of the valley. It may be reached on foot by way of the Yosemite Falls Trail. (Read des- cription of Sentinel Rock under V-30, and of El Capitan under V-3 2, page 76. Y ROCKY POINT. On the down-val- . - ley side of the parking area is a rock ■ ' slide which occurred about 1922. The scar is slowly being covered with vegeta- tion. It tells the story of the geological and biological forces that continue to alter the landscape. Grooved and shiny glacier polish left by Ice Age glaciers can be seen about 2 5 feet above the base of the cliff close at hand. This is one of the few places where glacier polish can be seen on the floor of the valley. Y YOSEMITE LODGE. The Yosem- m *y ite Lodge area was first developed ' ^ by the U.S. Army as an Army post when it administered the park prior to 1916. In 1915 it was improved by the Desmond Company which had a 20-year franchise to provide hotel accommoda- tions. During the period between 1920 and 192 5 a succession of reorganizations brought the present Yosemite Park and Curry Co. into being. The history of this company is told under G-12, page 90. Three Brothers Today a new lodge replaces the old one which originally was an Army barracks. New modern cottages are taking the place of the old redwood cabins. A gift shop, grill, post office, swimming pool and cafeteria are located at the Lodge. This unit is open all year and is popular with the winter visitors. The row of dwellings across the road from the Lodge once were Army non-commissioned officers' living quarters. Y YOSEMITE FALLS. The spur road - _ to the left leads to near the base of ' <* Yosemite Falls, a distance of 0.2 of a mile. One of the highest free- leaping waterfalls in the world, its total drop is 2,42 5 feet. The great upper fall is 1,430 feet, the middle cascade 675, and the lower fall 3 20 feet. The top may be reached by a rather steep but scenic trail which starts from Camp 4, which you passed just before reaching Yosemite Lodge. The falls are full in the spring and dry up in late summer. In winter a large ice cone usually forms 70 YOSEMITE NATURE NOTES Yosemite Falls at the base of the upper fall by slabs of ice formed from frozen spray falling off the cliff. The combined height of the falls is nearly twice that of the Empire State Building, at present the world's tallest man-made structure, while the lower fall is twice the height of Niagara. Y YOSEMITE VILLAGE. This in- 14 eludes the Park Service Headquar- ters, Yosemite Museum, post office, Western Union, photographic and curio shops, residences of permanent employees in the park, offices of the Yosemite Park and Curry Company, a garage and ser- vice station. Eventually the Village Store, studio and grill, Degnan's restaurant and store, as well as Best's Studio, will make up the merchandising portion of the village. V LOST ARROW. INDIAN CAN- , 5 YON. LEHAMTTE FALL. From 3 the plaza near the Yosemite Mu- seum and Park Headquarters you can see the Lost Arrow high on the cliff to the right of the Yosemite Falls. This slender shaft of granite is separated from the main cliff and rises to a height of several hundred feet. The Lost Arrow was first climbed September 3, 1946, by members of the Sierra Club, an ordeal which took them nearly 5 days and nights. The legend of the Lost Arrow is told in "Yosemite Indians," available at museums and gift shops. Indian Can- yon is the deep ravine to the right of the main cliff, so named from its use by the Yosemite Indians as an escape route when they were pursued by the Mariposa Battalion in 1851. During the early spring runoff Lehamite Fall drops into a ravine on the right wall of this canyon. Lehamite is Indian for "Ar- row-wood." i sill- Yosemite Museum AUTO TOUR 71 V LEWIS MEMORIAL HOSPITAL. 1 # The Lewis Memorial Hospital has a capacity of 16 beds and is equip- ped to handle most emergencies. It is operated under government contract and is staffed by competent doctors and nurses. The park dentist has an office in this building. The hospital was named in honor of W. B. Lewis, an early civilian superintendent of Yosemite Na- tional Park. The houses across the road from the hospital are residences of em- ployees of the Yosemite Park and Curry Co. This area is called Tecoya, from the Indian word To-co-ya, "The Basket," said to be associated with an Indian legend about North Dome. V CHURCH BOWL AND GLA- - - CIER POINT VIEW. In a natural ' * amphitheater at the base of the cliff is the Church Bowl where religious gatherings are held during the summer. Across the meadow Glacier Point rises 3215 feet above the valley floor. From here is one of the best views of the fire- fall. (For a description of the firefall read G-12, page 90.) V THE AHWAHNEE. The Ahwah- lO nee was opened in 1927. It has 115 rooms and cottages decorated in an Indian motif. Rooms of special note are the dining room with its lofty massive construction and tall windows which frame the scenic views; the great lounge, a room of cathedral-like proportions, and the El Dorado Diggin's, a cocktail lounge reminiscent of a street in an early California mining town. Ahwahnee is a native Indian word meaning "deep grassy valley" — the Yosemite Valley. Y HALF DOME. .Dominating the m q upper end of the valley is Half Dome, hallmark of Yosemite Na- tional Park. It marks the junction of Half Dome Tenaya Creek (left) and the Merced River (right). Rising nearly one mile above the valley floor it is one of the most majestic rock forms known. On clear days it can be seen from places along Highway 99 in the San Joaquin Valley. Half Dome was climbed for the first time in October 1875 by George G. Anderson. Today hikers reach its 13 -acre top in summer by a trail up the far (east) side with the aid of cables. The likeness of a great face on the 2000- foot high sheer surface gives rise to an interesting Indian legend, told in "Yo- semite Indians." (Take left-hand turn at intersection.) Y SUGAR PINE. The largest of the t Merced in the San Joa- iinin Valley some 80 miles distant. TREE ZONES — Between the tunnel and Chinquapin you pass through zones where the ponderosa pine and oak trees give way to the sugar pine, Jeffrey pine and lodgepole pine. Of special interest is the sugar pine, a tall shaft frequently clear for a hundred feet or more, its arms flung wide. At certain seasons long cones hang from the end of its branches. The Pacific dogwood adds beauty to this forest drive, especially in spring when it is white with blossoms and in autumn when the foliage turns red or pink. (More can be learned about trees in "Cone-bearing Trees of Yosemite" and "Broadleaved Trees of Yosemite," available at museums and gift shops.) W CHINQUAPIN. Chinquapin, 6,03 9 O feet in elevation, receives its name from a flowering shrub common in the area. This shrub grows in the Sierra at an elevation from 3,000 to 8,000 feet. It is from 1 to 8 feet tall and has a smooth brown bark with a yellow un- derside on the leaves. Related to the now almost extinct American chestnut, it bears burr-like fruit which may sometimes be seen. Chinquapin, the place, has been an important road and trail junction since the 18 5 0's. Across the highway from the service station is the District Ranger's headquarters. yy HENNESS RIDGE. A fire lookout — operates on a point on this ridge * during the fire danger period. Visitors are welcome. LOGGING RAILROAD — About a half-mile along the Henness Ridge road are the remains of an old railroad bed constructed and used by the Yosemite Lumber Company between 1912 and 1924 before private lands within the park were acquired. Running from El Portal up to an area called Empire AUTO TOUR 81 Meadows, the winding road bed spanned a distance of some 2 5 miles. It is now fairly well covered with undergrowth, but most of it can be traveled on foot. W VIEW OF SOUTH FORK CAN- 8 YON. The canyon below is that of the South Fork of the Merced River which joins the Main Merced River about 12 miles down stream. This high- way crosses the South Fork at Wawona. Signal Peak is the point to the right at which the level ridge of the mountain across the canyon drops off. W WAWONA CAMPGROUND. q Originally known as Camp A. E. Wood, after the first superintendent of Yosemite National Park, this camp- ground has been extended downstream some distance and is now one of the most modern campgrounds in the park. It is distinguished by individual campsites screened from one another by natural forest growth. (Read details in W-ll, page 82.) W THE WAWONA ROAD. Up . ^ stream is the only covered bridge '"in the entire National Park System and is now preserved as an historical structure. Across it ran the original Wawona Road into Yosemite Valley. Interest in building this first road into the valley from the south be- came active in Mariposa in 1874. The road crossed the Chowchilla Mountain to the west and followed the road which is seen emerging from the forest on the far side of the golf course. The original Wawona Road came in from the south as far as Alder Creek. In the early 1870's a desire to have a road into Yo- semite Valley was expressed by the Guardian of the Yosemite Grant. A contract was given to a company of Chinese to complete a road from Alder Covered bridge over South Fork of Merced River at Wawona 82 YOSEMITE NATURE NOTES General view of Wawona and Wawona Hotel Creek to Yosemite Valley for a sum of $10,000. The work was started Decem- ber 4, 1874, with 50 men and at times the crew numbered 300. By April 18, 1875 a road had been completed to near the present Camp Curry. (Read also V-37, page 78.) W WAWONA. Wawona, which in I | the Indian tongue meant 'big tree," was first a camp on the Mann Brothers trail through the high Sierra. Later Galen Clark, Yosemite Grant's first guardian, acquired the Wa- wona area, built a cabin and it became known as Clark's Ranch. Clark enlarged the building to accommodate travelers and it became an important stopping place for early Yosemite visitors. In 1890 a law was enacted setting aside a part of the Wawona area as reserved forest lands. Capt. A. E. Wood became the first superintendent of the area in 1891. With detachments from the Fourth Cavalry he made a determined effort for many years to keep sheep and cattle grazers and poachers out of the park. In 1875 the Washburn Brothers pur- chased the Clark ranch and over a per- iod of years built most of the buildings known as the Wawona Hotel. Following purchase by the U. S. Government in 1932, the Yosemite Park and Curry Co. assumed, under contract, management of the hotel at Wawona. W SOUTH ENTRANCE. Here at the 1^ southern gateway to the park, form- erly known as "Four Mile," is one of the four entrance stations where control of travel in and out of Yosemite is main- tained by National Park Service rang- ers. A short distance from this station is the south boundary of Yosemite Na- tional Park which adjoins Sierra Na- AUTO TOUR 83 tional Forest. National forests and na- tional parks differ in that national for- ests, under the U. S. Department of Ag- riculture, manage forests for such eco- nomic and recreational uses as lumber- ing, grazing, hunting and resorts, while national parks, under the U. S. Depart- ment of the Interior, are responsible for preserving their lands as primitive wil- derness areas and game sanctuaries for the enjoyment of all people for all time. (For a guide to points of interest along the road between Yosemite National Park and Fresno, see page 108.) MARIPOSA GROVE OF GIANT SEQUOIAS (Total driving distance 4.5 miles) B GIANT SEQUOIAS. The giant I sequoias (Sequoia gigantea) , popu- larly known as "Big Trees," are probably the largest and oldest living things in the world. Although they are related to the coast redwood (Sequoia sempervirens) , there is a striking dif- ference in general appearance and fol- iage. The giant sequoias are more mas- sive, while the coast redwoods are taller. The bark of the giant sequoias is a golden brown while that of its relative is darker. The burls of redwood souvenirs seen in gift shops are from the coast redwood; burls do not grow on giant se- quoias. Flowering of giant sequoias takes place from February to April, the pol- len being carried by the wind. In con- trast to the great size of these trees, their cones are only lVi" to 25/i" in length. Both male and female cones grow on the same tree. After maturing for two years on the tree, the female cone may drop from 150 to 300 seeds. Cones, however, may remain unopened on the trees for as long as 20 years. Usual methods of determining age of trees with boring instruments are not possible in the giant sequoias because of their great size. Accurate age dating in sequoias may be done only by counting the annual rings in fallen trees. Some sequoias have been estimated to be as much as 4000 years old. The wood contains no resin ducts but has a high percentage of tannin This chemical gives the red appearance to the bark and heartwood and turns black Grizzly Giant on exposed ends of fallen trees, giving them the appearance of being burned. Tannin resists insect and fungus attack, the great enemies of many other trees and thus aid longevity of the sequoias. Since sequoia wood is very brittle, light, and weak, with up to 80% waste for large trees when felled, it has little value as lumber although on occasion it has received some limited use as grape stakes. (For more information we recommend "A Guide to the Yosemite YOSEMITE NATURE NOTES Sequoias," available at museums .ind gift shops.) B MARIPOSA GROVE. The giant »% sequoia is native only on the west- ern slopes of the Sierra Nevada, and occurs in scattered groves for a dis- tance of 250 miles, mostly at elevations of 5 000 to 8400 feet. Of the three groves in Yosemite the Mariposa Grove is the largest and best known. It was probably discovered in 1849 by Major Burney, the first Mariposa County sheriff, and John McCauley. Measure- ments were taken and reported in the town of Mariposa but they were consid- ered just another "tall" story of those pioneer days. In 18 57 this grove was thoroughly explored and brought to public attention by Galen Clark, one of the first visitors to the region. He named it after the County of Mariposa in which it is located. In 1864 President Lincoln signed an act setting aside the Mariposa Grove and Yosemite Valley as the Yosemite Grant, the first State Park of the nation. It was administered by the State of California with Galen Clark as first guardian. The grove is about four square miles in area and includes about 200 mature trees. Ahead you will see a sign pointing to the GRIZZLY GIANT, named by James M. Hutchings in 1859, the fifth largest giant sequoia known and the largest in Yosemite. It may be the old- est of all giant sequoias, estimated age 3 800 years. The blackened places on the giant sequoias are burns from forest firs of the last few centuries. These trees arc amazingly resistant to fire, insects and fungus attack and usually die only when roots are disturbed and they fall. B YOUNG SEQUOIAS. Although ^ millions of seeds, each less than " 1 672th of an ounce when dry, may be dropped by a single mature tree, only about 15'' ever germinate and onl\r then when the seeds can reach min- eral soil. In spite of this low viability our giant sequoia groves are not dying off. In addition to this cluster numerous young sequoias have sprung up in front of the Big Trees Lodge where the soil was disturbed in the building of the parking area. Mariposa Grove Museum and Giant Sequoias AUTO TOUR 85 B MARIPOSA GROVE MUSEUM. a This museum, devoted exclusively to the story of the sequoias, marks the site of the original cabin built by Galen Clark in 18S7, shortly after he first visited the grove. The original cabin was destroyed about 30 years later. In 18 8 5 the State Board of Commissioners in charge of the Yosemite Grant built a second one on the same site, enlarging it in 1902. In 193 0 the present cabin, a replica of the former structure, was constructed as a museum. The tallest sequoia in the Mariposa Grove, the 2 86- foot-high Columbia Tree, can be seen across the meadow from the museum. Its height is almost equal to the length of a football field. This museum is open during summer only. B THE WAWONA (Tunnel) TREE. |- Probably the most photographed and certainly one of the most fa- mous trees in the world, the picture of this "tunnel" tree has appeared in geo- graphy texts the world over. In 1881 the Yosemite Stage and Turnpike Company hired the Scribner Brothers for $75 to enlarge an old burn to the present size of 8 feet wide, 26 feet long, and 10 feet high. The tree is 234 feet high, 19.8 feet in diameter at 10 feet above mean base. The name comes from the Miwok Indian word, "Wall- wo-nah," meaning "big tree." There are two other tunnel trees in Yosemite; the California Tree within a few hundred yards of the Griz- zly Giant and the "dead tunnel tree" on a loop just off the road through the Tuolumne Grove. The Wawona tunnel tree may now be dying from the tramp- ing of millions of human feet on its delicate roots and the former depreda- tion of man in cutting the tunnel. B WAWONA POINT. The spur m road leads a short distance to Wa- wona Point. From this point you will have a fine view of the canyon of the South Fork of the Merced River, the meadow and golf course in front of the Wawona Hotel. To the eastward, near the headwaters of the south fork, you can usually see Gale Peak, 10,693 feet in elevation, beyond which lies the drain- age system of the upper San Joaquin River. To the west (left) beyond the de- scending hills is the lower San Joaquin Valley, part of the great Central Valley of California. This is a choice spot from which to see colorful sunsets. CHINQUAPIN TO GLACIER POINT (Total driving distance 18 miles) G GLACIER POINT ROAD. The 0 original road to Glacier Point, built in 18 82, was acquired by the Federal Government in 1917 along with the old Wawona Road, at which time tolls were abolished. The present road was completed in 193 6 and follows the original road bed in many places. (J MERCED CANYON VIEW. Be- low is seen the gorge of the Merced River winding through the foot- hills with the Merced Road paralleling it. Near where these disappear beyond a bend are buildings of El. Portal just outside the west boundary of Yosemite National Park. On a clear day you can see the San Joaquin Valley where the town of Merced is located and on the other side of the valley the Coast Range, about 12 5 miles distant. The Wawona Road passes directly beneath you at this viewpoint. In front of you is a sugar pine with its typical ungainly branching form. HIGHWAY DISTANCES FROM Y05 Yosemite Valley Area (see above map) Ahwahnee Hotel Bridalveil Fall .._ Camp Curry 8 mi. 4.5 mi. 1.4 mi. Camp 4 (public campground) .8 mi. Camp 7 (public campground) _ 1.0 mi. Camp 9 (organization camp) 1.5 mi. Camp 11 (public campground) 1.8 mi. Camp 12 (public campground) __ 1.9 mi. Camp 14 (public campground) .--. 1.8 mi. Camp 15 (public campground) __ 1.0 mi. Housekeeping Camp 1.0 mi. El Capitan Bridge 3.5 mi. Happy Isles 2.5 mi. Mirror lake 2.5 mi. Old Village (store, etc.) 7 mi. Pohono Bridge 5.6 mi. Curry Company stables 1.9 mi. Wawona Tunnel (east portal) 6.0 mi. Yosemite Falls parking area .7 mi. Yosemite Lodge .6 mi. Reproduction of this map courtesy of tl copyri y m ', Upper Yosemite Fall S/'n *jL**)T>Kik. yosemiie Pt. Sit -j««> 4) o> o-5-c -J_i A ' ■'*■*. Mtn %- 12 JO Bucktrt Pui TO MONO LAKE- LAKE TAHOE- BISMOL OWEN6 river valley AND THE EAST Tiog* Put i L«*«s * ^ ^ L ' ^**\ I ,- / MKAbow*. / >y , ^Sw^m** /fit if \ "O l\ f -+ A ; I VOO«LS»NO 'V— C- i /„— »/ /^f«^ .' <■ . ,(/r V,.p*r*"" Pk- PARK HDG. p.c >jW VtlACICk 'POINT HOTEl V Campground High Si.rr. c«mp ~^ Withburn " .Li*e> K Xlsber, .e / f 10KW ( U/ | Triple Divide Pk. . J j I iien Moraine/ / m Meadows * \f PennrKiei Put IOJ75 SOUTH ENTRANCE I §/ TO FRESNO AND MADERA YOSEMITE NATIONAL PARK M UPS OF ROUTES COVERED BY THIS SELF-GUIDING AUTO TOUR. (Letters refer to the section of the book which describes that particular road) .