T17.2

''The tunnel opens widely, but you see quickly that it drops off into a deep chasm below. There is a rope bridge suspended between two points and the tunnel continues at the other end of it.''

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.

Searching the Bridge
Perception DC 20 The bridge looks well worn and passed on many times Knowledge Engineering DC 15 The bridge was made to support the small kobolds, the ropes and planks that hold it don't seem sturdy enough for much more.

May be able to fortify the bridge before passing.

Crossing the Bridge
The rickety rope bridge creaks and sways under your weight.

If 300+ pounds are on the bridge, it will collapse. Reflex DC 20 to catch yourself on the bridge and avoid falling, 3 Climb checks, DC 5

Fall 50ft (5d6) down below Acro DC 35 to avoid the first 10ft of the fall.

From K2
''You poke your head out and peer into a chasm, to your left is a small ridge that leads to the landing and a slightly warmed air blows from. From the landing also leads a rope bridge to the other side.''

From R17
''The air chills as you enter the tunnel. Your footsteps echo deeply.''

From R30
''A sightly warmer air blows from the other end of the tunnel. Your footsteps echo deeply''