pf2e.fyi
From Pathfinder Society Scenario #5-16: A Lie Told to Strangers, which isn't enabled.

Dangerous Collapsing Debris

HAZARD 3
ENVIRONMENTAL
Stealth +10 (trained) to notice the instability in the surrounding woodwork and precariously balanced masonry.
Description The room initially appears merely dilapidated, but on closer inspection it is positively liable to collapse at any moment.
Disable DC 23 Crafting (untrained) to safely shore up the weaknesses in the masonry by replacing rotten wood with other assorted bric-a-brac, DC 20 Thievery (trained) to carefully place boards and the like to create bridges over structurally weak areas.
Collapse
Trigger A creature moves into the hazardous area
Effect Bricks and broken wood fall on the triggering creature, dealing 2d10+13 bludgeoning damage (DC 21 basic Reflex save).
Pathfinder Society Scenario #5-16: A Lie Told to StrangersOGL