Southeastward view of the source area of the slide. Hebgen Lake, Gallatin County, Montana Earthquake. 1959.

Index card: The source area of the slide. View is southeastward. The mountain crest is about 1,300 feet above the valley floor, and part of the mountain slid northeastward into the valley. Part of dolomite buttress is in lower right corner of photograph. At the bottom of the photograph is a segment of the parking area constructed on the slide by the U.S. Forest Service as part of their Madison River Canyon Earthquake Area. A new highway (Montana Highway 499) now follows the Madison Canyon southwestward parallel to Earthquake Lake and across the Madison slide. Hebgen Lake earthquake. Montana. August 1959.