From Pathfinder #152: Legacy of the Lost God, which isn't enabled.

Thunderstone Cascade Trap

HAZARD 7

Stealth +15 (expert)

Description A trip wire halfway up the stairs releases half a dozen spherical thunderstones that bounce down the stairs and explode.

Disable DC 27 Thievery (expert) to safely cut the trip wire

AC 26; Fort +15, Ref +13

HP 54 (BT 27); Immunities critical hits, precision

Thunderstone Explosion

Trigger The trip wire is disturbed

Effect Several thunderstones bounce down the stairs and explode. Each creature within 10 feet of the lower half of the stairs takes 6d10 sonic damage (DC 24 basic Fortitude save). Creatures that fail this save are additionally Deafened for 1 minute; creatures that critically fail this save are instead deafened for 1 hour.

Pathfinder #152: Legacy of the Lost GodOGL