R15

The room is quite dark, the air is heavy and stale.

Searching the Floor
Perception DC 15 Above you you see two logs suspended at odd angles.

Disable Device DC 15 ''You follow the mechanics of the trap to a thin strand of cord that goes across your path. You carefully sever the line.''

If fail: ''Suddenly, great logs swing down from the ceiling ready to smash anything in their path. ''+7 x2 vs AC. 2d6+5 on hit and target is thrown prone.

From T8.1
You enter a wide but short room, ahead to your left is another tunnel leading out.

From T15.1
You enter a wide but short room, ahead to your right is another tunnel leading out.