pf2e.fyi
From Pathfinder Society Scenario #7-15: Within Antiquated Halls, which isn't enabled.

Falling Decorations

HAZARD 9
Stealth +16 (expert) to notice the incipient collapse; noticing the decorations has a DC of 0.
Description Large metal moons and spears break apart and fall when a creature moves beneath them.

Disable DC 28 Thievery (expert) or DC 28 Crafting (expert) to prevent the decorations from falling.

AC 28; Fort +21, Ref +15
Hardness 17, HP 68 (BT 34); Immunities critical hits, precision

The Sky is Falling
Trigger A creature walks through the space under the hanging decorations

Effect The little bit of disturbance is all the cracked decorations need to come dislodged. They fall, their sharp metal edges dealing 6d10+15 piercing damage (DC 28 basic Reflex save) to those underneath them.
Pathfinder Society Scenario #7-15: Within Antiquated HallsORC