Web Lurker Deadfall
Web Lurker Deadfall 3
Stealth: DC 23
Description: A web tripwire lets loose a bundle of boulders that fall on all targets within a 10-foot square.
Disable: Survival (trained) or Thievery (expert) DC 20 to rearrange the webbing
AC: 19 Fort: 9 Ref: 9
Trigger: A creature steps into the square with the web tripwire Effect: All creatures in the trap’s 10-foot square take 2d6 bludgeoning damage (DC 20 basic Reflex save).
Source: Bestiary pg. 325