pf2e.fyi
From Pathfinder Adventures: Troubles in Grayce, which isn't enabled.

Old Murder Holes

HAZARD 3
UNCOMMONMECHANICALTRAP
Stealth +10 (trained)
Description Several dozen spear holes line the sides of the cavern walls, triggered by a false stone in the partially paved surface of the cavern floor. However, most of the spears used to arm the trap are broken and long forgotten on the dusty cavern floor.
Disable DC 20 Thievery (trained) to deactivate the trigger on the floor, or DC 23 Athletics to pry up the floor plate to dislodge it from the trigger.
Spear Launcher
Trigger Downward pressure (such as by a footstep) is applied to the false stone
Effect The trap shoots several spears, making an attack against the triggering creature or object on the stone.
Melee Spear Volley +16, Damage 2d10+13 bludgeoning
Pathfinder Adventures: Troubles in GrayceORC