From Pathfinder Society Scenario #6-00: Salt of the Ocean, which isn't enabled.

History's Repetition (3-4)

HAZARD 4

Stealth +8

Description Pebbles form into a hand the size of an ox, which reaches to crush anyone in the water.

Disable DC 22 Thievery (trained) to pick apart the pebbles, or DC 18 Warfare Lore to recognize and recreate the battle

Crushing Hand

Trigger Three or more creatures enter the submerged passage

Effect The hand reenacts its final battle against the invading demon. It makes a crushing power Strike against all creatures in the passage.

Melee Crushing Power +17, Damage 4d8+10 bludgeoning

Reset 24 hours

Pathfinder Society Scenario #6-00: Salt of the OceanORC