High on the west rim of Island Park Caldera, a seventy-two-foot Forest Service lookout tower overlooks this large volcanic feature. It is the only preserved steel tower of its kind in this part of Idaho. When it was erected in 1936, lookouts were essential for fire detection throughout the region's forests. It is still used during especially severe fire hazard, but planes now handle regular fire patrol. Forest Service Road 80120 climbs to the Bishop Mountain lookout at an elevation of 7810 feet.