The bridge environment presents a canyon with bridges of different heights spanning the canyon from one side to the other. A river runs through the bottom of the canyon. The bridges vary not only in height but also in apparent steadiness. The lowest two bridges (seven and fifty meters) appear safe and solid. The highest bridge (eighty meters) is a rope bridge with widely spaced wooden slats. The wind sound effects increase as the patient goes higher and higher. The therapist transports the patient from a boat in the river to the bridges with the press of a button. The patient can remain on a bridge as long as necessary during exposure sessions.