R27

''There's a large group of kobolds here, twenty or so of them, with swords armed. Suddenly, you hear a loud boom from somewhere above you. The foundation of the chamber shakes, and the ceiling crumbles and falls''

Reflex DC 10

You dart back into the tunnel behind you as rock and dust and debris fill the air. The chamber before you is totally shut off.

BEGIN COUNTDOWN 20 rooms/rounds

From T16.1
Entering this chamber, ahead of you on your far left is another tunnel out.

From T27.1
Entering this chamber, ahead of you on your far left is another tunnel out.