In our previous visit we
had noticed a natural basin of some size and depth among the trees on
the north side of the road, and we now found that the chaos was the
result of a recent falling-in of this basin; so that from the bottom of
the first cave, standing as it were under the road, we could see
daylight through the newly-formed hole.
The total length of the floor of the inner cave, which lies north-east
and south-west, is 51 feet; and of this floor a length of about 37 feet
was more or less covered with ice, the greatest breadth of the ice being
within an inch or two of 11 feet. Excepting in the part of the cave
already mentioned as being less than 3 feet high, we found the floor not
nearly so dry, nor so completely covered with ice, as when we first saw
the glaciere, three years before, in the middle of an exceptionally hot
August. Under the low roof all was very dry, though even there the ice
had not an average thickness of more than 8 inches. It may be as well to
say, once for all, that the ice in these caves is never found in a sheet
on a pool of water; it is always solid, forming the floor of the cave,
filling up the interstices of the loose stones, and rising above them,
in this case with a surface perfectly level.
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