T23.1

This tunnel snakes along, moss and fungus grow along the walls and floor here.

Searching the Floor
Perception DC 20 The floor is littered with foot wide holes covered carefully with patches of moss

Punji Stake Trap x12

Attack +10 (-DD Modifier if found), 2d4 damage takes damage if escaped by anyway other than Disable Device 20

You step into one of the holes and sharp inwardly pointing stakes sink into your leg.

Can't effect Large or larger creatures (Mozart steps on one but his large foot just covers the hole)

DC 15 or less Disable Device check, takes damage, does not escape.

DC 20 Escape Artist check, or DC 24 Strength check, escape but take damage

From R23
''The air remains warm as you enter this tunnel. You're unable to see the other end of it.''

From R35
''The air remains warm as you enter this tunnel. You're unable to see the other end of it.''