pf2e.fyi
From Pathfinder #214: The Broken Palace, which isn't enabled.

Breakaway Ladder

HAZARD 4
UNCOMMONMECHANICALTRAP
Stealth +12 (expert)
Description The rope ladder rips free from its anchors and drops into the pit.
Disable DC 25 Thievery (trained) or DC 22 Crafting (trained) to secure the ladder's anchors so they won't break
Rip Free
Trigger More than 3 Small creatures or more than 1 Medium creature climbs the ladder at the same time
Effect The ladder's anchors rip free from the wall, dropping the ladder and anyone on it into area B1. Anyone on the ladder falls 50 feet, taking falling damage as appropriate. A creature at the top of the ladder can attempt a DC 21 Acrobatics check or Reflex save to Grab an Edge and cling to the side of the pit in area A9. A creature lower on the ladder can attempt to grab a handhold on the shaft's wall, but in this case the check increases to DC 25 Acrobatics.
Pathfinder #214: The Broken PalaceORC