Bishop Mountain is an extinct volcanic vent on the rim of the Island Park Caldera. At the summit there is a fire lookout that is one of the few remaining towers in the Targhee National Forest. The 72-ft tower was constructed in 1937. Now on standby status, the tower saw extensive service during the Yellowstone Fires of 1988. The summit also has a couple of picnic tables, a cabin that is available for rent through the Forest Service and a fire pit.