From Pathfinder Kingmaker, which isn't enabled.

Dropping Web Trap

HAZARD 2

Stealth +11 (expert)

Description A 30-foot-wide rope bridge spans a 30-foot‑deep chasm between two crags on the mountainside.

Disable DC 15 Crafting or DC 18 Thievery to secure the bridge in place.

Collapse

Trigger One Large, two Medium, or three Small creatures move onto the rope bridge

Effect The bridge collapses and creatures on the bridge fall 30 feet, taking 15 bludgeoning damage. The triggering creatures can attempt a DC 18 Reflex save to Grab an Edge to avoid falling.

Reset 1 hour

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