Messing with the Jade Colossus dungeon generator again and hit an interstitial space. A huge area that's got a dozen exits into other parts of the ruins.
The one I got from the roll is a hallway/room/space filled with teeth, trophies of whatever roams this space. There is no clue, yet, as to what could be doing this.
This was hidden behind a locked door, which I may switch to a Large Boulder.
Clapping like a seal and laughing because I got two rooms connected by a short hallway with the following properties
30 foot circular room, floor to ceiling mirrors: 2 sealed/hidden exits.
Connected to
15 foot square room that spins.
God this rules.