glacier cave
a cave of ice, usually underneath a glacier and formed by meltwater; cave entrances are often enlarged near a glacier terminus by warm winds; most common on stagnant portions of glaciers.
Image
A small stream flows from the glacier cave at the terminus of Arolla Glacier in the Pennine Alps. Photograph from 1902.
H.F. Reid, archived at the World Data Center for Glaciology, Boulder, CO
Topic(s):
glaciers