Ventilation-Shaft Collapse
Hazard 1[ENVIRONMENTAL] [MECHANICAL]
Stealth DC 17.
Disable Crafting DC 17 to brace the weak section; Athletics DC 19 to shift the hanging brace from outside the fall zone.
Trigger A creature climbs the broken ladder or disturbs the bracing. Effect Stone and timber fall in a 10-foot burst, DC 17 basic Reflex, 2d8+3 bludgeoning. On a critical failure the target is also pinned and immobilized until Escape DC 17 or Athletics DC 17 by an adjacent ally.
Reset None.