8I COMPACTING WALLS TRAP ROOM. A huge metal one-eyed crying Triskelion face is mounted in the center of the west wall, about a foot off the ground, about eight feet high and five feet wide. When the room is entered, a falling block will drop down blocking exit in a fashion like that described in Room 8E.
The east wall will begin moving towards the entrance to Room 8H. It moves slowly, taking about 3 rounds to crush any victims into the wall. It does not quite reach the west wall, because the Triskelion face sticks out a little bit. If the wall succeeds in crushing the adventurers, they must make a save vs death magic or die immediately. Even if they make the save, they will take 1d20 + 10 hit points of damage, which may prove fatal.
At this point a staircase will form in the north portion of the room, leading down fifteen feet to a passage leading to Room 8F. Meanwhile, the collapsing wall will retract to its original position.
The trap can be disarmed, however. The eye in the giant Triskelion face looks like red concentric circles, like a target for archery. If the eye is struck by significant force (such as an arrow or even a punch), the wall will stop compacting and slowly return to its normal position. A staircase will then form in the south portion of the room, leading to 8J.
Each staircase will remain for 1 turn before closing up again. Both staircases can not be active at the same time. Once the staircase closes back up, this room will become inactive for 24 hours.