T24.1

''The tunnel flickers with distant orange light. Shadows dance on the walls, mimicking the random choatic movement of the kobolds that dwell here.''

Searching the Walls
Perception DC 25 +1/10': You see a small crevice in the wall here, it looks like something burrowed it, it's only large enough for a small creature to crouch in, or a perhaps a medium creature to crawl through.

From K8
''You poke your head from the small burrow into a short tunnel. to your right it leads away, curving quick, to your left, sounds of harsh yapping and a furious heat burn.''

From R24
''The tunnel turns right quickly, then leads onward. Your face is flushed from the hot air bellowing forth.''

From R25
''You feel relief as you exit into the tunnel, already the head has subsided on you. You walk onward till the tunnel makes a sharp left.''