Human: Compose a short description of a foreboding setting outside a spooky cave in the wilderness with quartz crystals and phosphorescent fungi. Assistant: 
Almost no moonlight reaches the bottom of this elbow-bend crevasse, and the rocks are quite cold to the touch. A broad layer of pink rock travels sinuously along one wall, describing past deformations. Wedged into the fissure high overhead is a massive boulder, arrested in its fall by the narrowing canyon.