One corner of the cave was occupied by a broad and solid-looking cascade, while another corner showed the opening of a very narrow fissure, curved like one of the shell-shaped crevasses of a glacier.

Into this fissure the ice-floor streamed; and Rosset held my coat-tails while I made a few steps down the stream, when the fall became too rapid for further voluntary progress.

I let down a stone for 18 feet, when it stuck fast, and would move neither one way nor the other.

The upper wall of this fissure was clothed with moss-like ice, and ice of the prismatic structure,--with here and there large scythe-blades, as it were, attached by the sharp edge to the rock, and lying vertically with the heel outwards.

One of these was 11 inches deep, from the heel to the rock, and only one-eighth of an inch thick at the thickest part.
The angle occupied by the cascade or column was the most striking.