Oh shoot, my mistake! I updated the map on the "live" version at Gridmapper but never exported to the forum. And I guess we already tried that door, because I had recorded "green gas".
Yikes! Close the door quickly while holding our breath. Maybe try the door on the east wall of the same room.
[f=32]Wiglaff the Elf, F3/MU2
(M 12", AC 9, HD 4+1, hp 14/14, N) cloak of elvenkind
, battle-axe; light, colour spray
[f=47]Wilibald "Willie" Whitfoot, F1/T1
(M 12", AC 6, HD 1+2, hp 9/9, L) gambeson+helm, shield+warhammer[/f]