human
Make a concise location description of a spooky cavern with a mine shaft and a floor made of obsidian.
assistant
This room is breathtakingly massive in size. The walls shimmer like sheer glass, and the floor itself is made of a black, bubbled obsidian. Cut into the low ceiling is a narrow opening that leads up to an abandoned mine shaft. Faint light trickles through it, the only illumination and the one thing that still connects the cavern to the world that waits outside it.