There was an abrupt piece of rock-floor between this end and the termination of the ice.

The western wall was ornamented with a long arcade of lofty columns of very white ice, looking strangely ghostlike by the light of two candles, crystallised, and with the porcelain appearance I have described before.

We could not measure the height of these columns, but we found that they extended continuously, so as to be in fact one sheet of columns, connected by shapes of ice now graceful and now grotesque, for 27 yards.

The ice from their feet flowed down to join the terminal lake, which formed a weird sea 28 yards by 14.

My notes, written on the spot, tell me that between this lake, which I have called terminal, and the end of the cave, there is a sheet of ice 48 yards long, but it has entirely vanished from my recollection.
I now sent Christian back with a ball of string, up the steps we had cut for the descent, with directions to get as near as he could to the top of the main fall, and then send down a stone tied to the string, as I wished to determine the length of the fall.