Booby traps can be divided into explosive and non-explosive antipersonnel devices and anti-vehicle (i.e., tank, vehicle, helicopter, and riverine craft) devices. Antipersonnel booby traps were concentrated in helicopter landing zones, narrow passages, paddy dikes, tree and fence lines, trail junctions, and other commonly traveled routes. Anti-vehicle booby traps were deployed primarily on road networks, bridges, potential laager positions, and riverine choke points.
Those are some nasty traps.