pf2e.fyi
From Pathfinder Society Scenario #1-03: Escaping the Grave, which isn't enabled.

Sodden Floor

HAZARD 0
Stealth +15 (trained)
Description The floorboards here are rotting and soft, giving way and dropping anyone above into the hole below.

Disable DC 16 Crafting (trained) to reinforce the compromised floorboards.

AC 10; Fort +1, Ref +1
Hardness 5, HP 1 (BT 0); Immunities critical hits, precision

Crumble
Trigger A creature walks onto any square containing the sodden floorboards.

Effect All squares with floorboards give way. Each creature in any of the marked squares must attempt a DC 18 Reflex save.

Success The creature moves to the nearest safe square and avoids falling in.

Failure The creature falls 10 feet, takes 5 bludgeoning damage as a result of the fall, and is prone in the hole.

Pathfinder Society Scenario #1-03: Escaping the GraveOGL