Wall Blades Trap

Level 3Hazard (Complex)
HazardLargeRemaster
AC
22
HP
16
Speed
0 ft.
Perception
+0
Fort
+12
Ref
+6
Will
+0
Stealth
+10
Recall Knowledge DC 18 (arcana)
Disable DC 20 thievery (trained) to disengage the mechanisms that operate the blades in one wall

A series of rotating, serrated blades attached to long poles routinely slice out of grooves carved into the stone walls.