human
Write a detailed description of a spooky scene outside a cave with a boulder, alexandrite, and granite.
assistant
Constricted with roots and moss hanging from ceiling and walls, the tunnel is hazardous and cloaked with shadow. Clay and dirt combine to form an uneven floor, and a large boulder composed of granite and alexandrite has cracked and fallen across the tunnel in great shards. It creates a twisted obstacle course in the already congested labyrinth.