Helena National Forest is located in west-central Montana, in the United States. Covering 984,558 acres (3,984.36 km2), the forest is broken into several separate sections. The eastern regions are dominated by the Big Belt Mountains, and are the location of the Gates of the Mountains Wilderness, which remains much as it did when the Lewis and Clark Expedition passed through the region. The western sections have both the continental divide and the Scapegoat Wilderness area, which is part of the Bob Marshall Wilderness complex. The southern region includes the Elkhorn Mountains. The forest is composed of a mixture of grass and sagebrush covered lowlands with "island" pockets of lodgepole pine and more mountainous areas where Douglas fir, spruce and larch can be found. The rocky mountains in the region do not exceed 10,000 feet.

U.S. Route 12 or U.S. Highway 12 (US 12) is an east–west United States Numbered Highway, running from Aberdeen, Washington, to Detroit, Michigan, for almost 2,500 miles (4,000 km). The highway has mostly been superseded by Interstate 90 (I-90) and I-94, but, unlike most U.S. Highways that have been superseded by an Interstate, US 12 remains intact as an important link for local and regional destinations. The highway's western terminus in Aberdeen is at an intersection with US 101, while the highway's eastern terminus in Downtown Detroit is at the corner of Michigan and Cass avenues, near Campus Martius Park.