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

History's Repetition (1-2)

HAZARD 2

Stealth +5

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

Disable DC 18 Thievery (trained) to pick apart the pebbles, or DC 15 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 +14, Damage 1d10+5 bludgeoning

Reset 24 hours

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