1985 Map of Mount Thompson

About this map

Deerlodge National Forest and Helena National Forest meet in this 1985 survey, documenting a landscape deeply shaped by mining and mountainous terrain. The map centers on Mount Thompson and its surrounding drainages, including Cataract Creek and Ore High Creek. Evidence of the region's industrial past is visible through features like the Comet Mine Shaft and several other generic Mine Shaft markings near Comet. The southern portion of the sheet is defined by the Boulder River corridor, where an Abandoned Railroad traces the riverbank through Galena Gulch. Notable landforms such as the Occidental Plateau, Bluebird Flats, and Sugarloaf Mountain illustrate the high-elevation character of the area. This record serves as a detailed guide to the road networks and water features, including Amazon Gulch and Snowdrift Creek, during the mid-1980s.