Camouflaged Spiked Pit Trap (CR 8)

The material below is Open Game Content from a 3PP Source

Camouflaged Spiked Pit Trap CR 8
Type mechanical; Perception DC 25; Disable Device DC 20
EFFECTS
Trigger location; Reset manual
Effect 50-ft.-deep pit (5d6 falling damage); pit spikes (Atk +15 melee, 1d4 spikes per target for 1d6+5 damage each); DC 20 Reflex avoids; multiple targets (all targets in a 10-ft.-square area)