WABAR 167

Next morning I was up betimes to cast round the scene on
foot to a distance of about a mile from the two craters.
Having got far enough to satisfy myself that there were
no other craters or signs of them beyond the main area I
walked back over the rolling sand downs, making a minute
inspection of every nook and cranny until I came to a patch
of the bedrock. It was of a dazzling whiteness and appar-
ently unburned, though it was broken up and presumably
affected by the heat in its vicinity.

I then ascended a sand ridge that separated this patch
from the beginnings of the crater area. From there I saw a
fair-sized patch of mixed slag-like fragments and broken up
bedrock about 200 paces southward of the raised NW.
extremity of the larger vent (Crater B—see plan). To south-
west and west of the same point lay another similar patch,
while the crater itself, with higher walls on its north-west
and south sides than elsewhere, measured 120 paces in dia-
meter and 412 in circumference. A section of the circular
rim on the north side was missing, however—the length of
the gap so formed being 52 paces,—while two small patches
of debris lay respectively NW. and NE. of this gap at a
distance of 65 paces with an interval of 110 paces between
them. The mouth of this crater sloped down from all sides
to a central depression, though the thickness of the sand
which had drifted into it made it impossible to ascertain the
character of the actual floor.

The centre of the second and smaller crater (A—see plan)
lay on a bearing of 313° (in a straight line with our tents
beyond it) from the NW. corner of Crater B. Walking
towards it I measured 140 paces to the edge of its outer
fringe of slag, whose width on a gentle slope to the lip of the
crater was 50 paces. Bearing slightly to the right at 345° to
take a section over the central line of this crater I found an
inner fringe of slag 10 paces wide whence it was 55 paces
(including a narrow inner fringe of slag on the other side)
across the mouth to the further lip, beyond which lay a
glacis of slag to a width of 43 paces. The rim of this crater
formed a more or less perfect circle with walls of uniform
height all round. Close by the last point, at distances vary-