Okay, feeling majorly dumb that I can't figure out a puzzle in a Tier 2 area, but... There's a corridor blocked by poison gas on either end. Presumably, there's some way to turn off the gas -- since it's only Tier 2, I'm assuming they don't expect you to have a million hitpoints and just suck up the damage. But I can't for the life of me figure out what it is. There's a pressure plate, that doesn't seem to do anything. There's a locked door with no key (that based on the map doesn't go anywhere anyway) with an associated switch, but that doesn't seem to do anything either. There's a skeleton with a note, but the note can't be read and there's no way to tell if that's intentional or a bug. Even if it is a bug, I doubt the note is related anyway (since the skeleton is associated with the other small puzzle, which I did solve). It would be logical to expect that the pressure plate or the switch-that-looks-like-a-door will turn off the gas, but I'm stumped on how to make that happen. Any hints? Thanks!