Human: Make a concise location description of a spooky cave in the wilderness with ice, icicles, cavern, and walls. Assistant: 
Near the northern end of the cavern, the walls and floor converge to form an alcove. A vertical crevice, barely wide enough to squeeze through, leads deeper into the rock. Overhead, icicles hang like pointy teeth in a gaping maw, glistening hungrily and shedding a glowing blue-green light through the massive layers of ice.