2017 Map of Mortarstone Bluff

About this map

The Missouri River cuts across this corner of Montana, defining the boundary between Roosevelt and Richland counties. The landscape is heavily marked by a complex system of dry washes and topographic landmarks, including Mortarstone Bluff and Haystack Butte. These features, along with names like Coalmine Coulee and Schoolhouse Coulee, suggest a history of resource extraction and early rural community infrastructure. Genealogists may find interest in the Fisher Cem located on the higher ground east of the river. The terrain is further dissected by numerous drainages such as Eagles Nest Coulee, Simons Coulee, and the long reach of W Charlie Cr. Transport in this part of the Brockton District is facilitated by a network of Bureau of Indian Affairs routes and county roads that navigate the breaks and basins.