The World's End: A Post Apocalyptic Dungeon Crawl
Floor 1 Room 1
This simple chamber is dark outside of the light that stretches from the above, where a small hole just enough for a man to slip into sits above you one-hundred feet. A single exit leads forward twenty feet away from you, slipping down a narrow natural corridor way into the darkness.
The ground is covered into dust, and other such things, making you wonder when this chamber was last seen by human eyes.