From Pathfinder #176: Lost Mammoth Valley, which isn't enabled.

Falling Stalactites

HAZARD 3

Stealth +13 (trained)

Description Unstable stalactites fall from the ceiling.

Disable DC 20 Survival (trained) to remove a stalactite without triggering a fall

AC 16; Fort +12, Ref +12

HP 42 (BT 21); Immunities critical hits, precision

Fall (attack)

Trigger A stalactite is damaged or touched

Effect The stalactite falls, making an attack against each creature underneath.

Melee Stalactite +16, Damage 2d10+13 bludgeoning

Pathfinder #176: Lost Mammoth ValleyOGL