1958 Map of Roundup

About this map

The Big Snowy Mountains dominate the central landscape of this central Montana region, rising sharply above the surrounding plains to reach Greathouse Peak. Within the shelter of these heights lies a portion of the Lewis and Clark National Forest, while the lowland areas are defined by the winding course of the Musselshell River. The map captures a transition in the mid-century economy, showing the presence of energy extraction at the Big Wall Oil Field alongside a dense network of water management features like Deepmans Basin Reservoir and the War Horse N W R (Yellow Water Unit).