What mountains range does the high mountain pass through at an elevation of 6820 ft that has part of the Interstate Highway System that runs from San Diego, California, to Sweetgrass, Montana ?
Interstate 15 in Idaho Interstate 15 (I-15) is a part of the Interstate Highway System that runs from San Diego, California, to Sweetgrass, Montana. In Idaho, the Interstate Highway runs exactly 196 mi from the Utah state line near Woodruff north to the Montana state line at Monida Pass. I-15 is the primary north–south highway of Eastern Idaho. The Interstate Highway connects Pocatello and Idaho Falls, the fourth and fifth largest cities in Idaho, and the smaller county seats of Malad City, Blackfoot, and Dubois. I-15 connects all of those cities with Salt Lake City to the south and Butte to the north. The Interstate has business loops through McCammon, Inkom, Pocatello, Blackfoot, and Idaho Falls.
Crazy Peak Crazy Peak is the highest peak in the Crazy Mountains, an isolated range of the Montana Rockies, in the United States. Crazy Peak dominates the surroundings, rising over 7000 ft above the Yellowstone River Valley, and is the highest peak in Montana north of the Beartooth Mountains, which are 50 mi to the south. Crazy Peak is also the most topographically prominent peak in Montana. A small glacier exists on the northeast slope of the mountain. The mountain is located on private land within the Gallatin National Forest.