2017 Map of Trinity Mountain

About this map

Trinity Lookout stands as the high sentinel of this high-elevation terrain within the Boise National Forest in Elmore County. The landscape is defined by a dense network of glacial cirques and alpine basins, most notably the lake-rich Rainbow Basin which contains Middle Rainbow Lake, Big Rainbow Lake, and Hideaway Lake. To the west, the massive profile of Lava Mountain overlooks Smith Cr Lake and Potter Lake, illustrating the volcanic and tectonic forces that shaped this portion of the Trinity Mountains.