This trap consists of a small hole with inward-pointing barbed spikes.
Punji Trap CR 1/2
Type mechanical; Perception DC 20; Disable Device DC 20
Trigger location; Reset manual
This trap is just large enough for a Medium-sized character’s leg. When a creature steps in the square, the trap catches and holds the leg. The target takes damage if it tries to move from that square or if a Disable Device attempt to free her fails by 5 or more.
Pathfinder Companion: Adventurer’s Armory. Copyright 2010, Paizo Publishing, LLC; Authors: Jonathan Keith, Hal Maclean, Jeff Quick, Christopher Self, JD Wiker, and Keri Wiker.