Human: Please generate a dreary scene inside a tunnel cavern with mining equipment, lichen, and water seeping down the walls. Assistant: 
Water seeps through the tunnel, slowly dripping down the walls and into a grate placed to pick up the extra runoff. A dark green trail marks the route the water takes on the way down, several kinds of moss and lichen thriving in the moist environment. A large overhang protects mining equipment stored for future use at the end of the cavern.