2017 Map of Selden Canyon

About this map

Tonuco stands at the northwestern edge of a landscape defined by the winding course of the Rio Grande as it cuts through the mountains of Doña Ana County. This 2017 survey details the complex topography of the Tonuco Mountains and San Diego Mtn, where numerous drainage features like Tonuco Draw and Horse Canyon descend toward the river valley. The corridor is a vital transit route, as evidenced by the modern Interstate 85 and older paths such as Kit Carson Rd and N Valley Dr. A significant landmark of engineering history is preserved at the Rio Grande Bridge Historic Site near the southern bend of the river. The map also captures the varied terrain of the Selden Hills and the dramatic narrowing of Selden Canyon, providing a clear view of how these landforms have dictated the placement of roads and settlements over time.