2023 Map of Tancosa Windmill

About this map

Sisnathyel Mesa rises above the high desert floor in this detailed 2023 survey of the borderlands between Sandoval and Rio Arriba counties. The landscape is defined by its drainage systems, most notably the winding course of Cañon Largo and the tributaries of Tancosa Wash and Pena Wash. This area is characterized by vast open spaces such as Apache Flats and the narrow corridor of Chacon Canyon. Transportation across this section of the Navajo Nation is facilitated by a network of historic Bureau of Indian Affairs routes, including Indian Svc Rd 36 and Indian Svc Rte 6. The map serves as a contemporary record of this rural landscape, documenting local water features like Mule Lake and the established public land survey system grid that organizes the territory.