1968 Map of Krumbo Ridge

About this map

Malheur National Wildlife Refuge boundaries overlap the western edges of this topographic study, where the high desert terrain of Harney County transitions into the southern end of Diamond Valley. The landscape is dominated by the massive landform of Krumbo Ridge, a prominent feature that directs the drainage of several seasonal and perennial waterways. A network of primitive transit routes, including Moon Hill Road and various unnamed Jeep Trails, navigates the complex contouring between Krumbo Butte and the surrounding drainages. Water sources are critical in this arid environment, evidenced by the naming of remote points such as Ruby Springs, Krumbo Springs, and the aptly named Hidden Seep. The map details the hydrological system of the region, tracing the paths of McCoy Creek, Cucamonga Creek, and Krumbo Creek as they carve through the high-elevation volcanic plateau.