Ki and Gil will enter this room through that sole door at the left of it. It contains no enemies at all - and is the first room inside this game that can only be reached by selecting the "Password Game Continue" option on start screen. Its Room Pass, because you'll need it, is S32 (same as Play Room).
This is the first room in the game where the tops of the walls are coloured claret-purple instead of emerald-green, ochre-yellow, peach-orange, ruby-red or magenta-pink. It also wraps around vertically, like some previous rooms - and if you proceed in either direction, you will end up back at centre.
The key at the left of the room opens the aforementioned sole door at the left of the room, which leads back off to Secret Corridor (Room Pass: Y3Y - same as Chieftain's Room). Now you know exactly what makes this room hall "forbidden" - because you can't reach it by playing the game normally.
NOTE: If Ki or Gil walks over the exact centre of the room, a trap door will open up beneath them and the text "A CHUTE!" will appear on the screen, and they will then both be warped to Ancient Ruin. This is the first of three secret warps in the game - the other two are in Third Cell and Water Duct.
