From Pathfinder #186: Ghost King's Rage, which isn't enabled.

Caustic Shower

HAZARD 21

Stealth +43

Description Contact with the doors, pillars, or statue causes a shower of acid.

Disable DC 48 Crafting (master) to ground the charged features or DC 50 Thievery (legendary) to disable the contact sensors

Acid Shower (acid)

Trigger A creature touches the doors, pillars, or statue directly or with a tool

Effect A shower of acid rains down from the ceiling, dealing 8d10+48 acid damage to all creatures in the chamber (DC 44 basic Reflex). On a critical failure, a creature additionally takes 1d10 persistent acid damage.

Pathfinder #186: Ghost King's RageOGL