1966 Map of Triangle Park

About this map

Coulter Mesa dominates the southern portion of this mid-1960s landscape, providing a high-elevation plateau defined by complex drainage systems like Snowdrift Gulch and Tangle Gulch. As part of the White River National Forest, the region shows a clear focus on backcountry recreation and seasonal ranching operations. The presence of Mud Spring Ranch and several isolated corrals near Triangle Park points to the area's history of high-country grazing, while the inclusion of the Three Forks Campground, Little Box Campground, and Spruce Picnic Area indicates a transition toward managed forest leisure during this era.