Trapdoor

are recurring traps in.

NaN Trapdoors are used by NaN Rats in the TWWHD:. If TWWHD: crawls onto one, a nearby TWWHD: will use a bell pull to activate the TWWHD:, ejecting TWWHD: out to the northwestern end of TWWHD:.

NaN Trapdoors are indistinguishable from normal ground until activated, at which point they become NaN Pits leading to lower levels.

The variant found in the FSA: activates when a FSA: steps within its area, while the variant in FSA: FSA: arena is activated using a FSA:.

NaN Trapdoors appear in the PH:. NaN Trapdoors appear as black squares on a hanging PH: inside the PH:.