General Hazards | Adventure-Specific Hazards | Weather Hazards


Unstable FloorHazard 3

Uncommon Environmental 
Source They Hunger Below pg. 44
Complexity Simple
Stealth DC 20 (trained)
Description An unstable section of limestone crumbles under the weight of anyone who steps on it.
Disable DC 20 Engineering or Mining Lore or DC 23 Survival to determine the exact extent of the unstable ground and to optionally cause it to collapse safely into area A2 below.
Deeper into the Darkness [reaction] Trigger A Small or larger creature walks onto the weak limestone; Effect The ground collapses, and the triggering creature falls 15 feet into area A2 below. The creature can try to Grab an Edge (Reflex DC 23) to avoid falling, otherwise the fall inflicts 7 bludgeoning damage plus an additional 4d6+3 bludgeoning damage (DC 23 basic Reflex save) from falling rubble.

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