The Tavern

EDIT

Sorry, it looks like I was mistaken on how these work. For some reason, I had thought they work like teleport rings....

Uh, teleport traps (on the floor) still are random teleports. Teleport the exploration effects pulls you into monsters.

I've had this happen in some recent games. The ctrl-p text is the exact same as *Tele: "You feel yanked towards a nearby monster!"
At least twice this was when descending stairs, which was pretty interesting and unexpected.