This Gorgeous Ice Cavern Has An Ancient Forest Underneath

The cave is full of pebble stones and gravel which buried the forest a long time ago. Image credit: AER Wilmington DE
The Earth has gone through a series of ice ages, in which glaciers and ice sheets grew, advanced, and then retreated. During these events, they often discharge molten ice streams that push aprons of gravel beyond the edge of glaciers. A layer of gravel likely engulfed the forest, encasing the trees in a protective tomb of gravel.