1983 Map of Chromo Mountain

About this map

The Tierra Amarilla Grant dominates this 1983 survey of the high country along the Colorado and New Mexico border. Situated along the Continental Divide, the landscape is defined by the massive Chromo Mountain and the headwaters of several drainages, including Rio Chamita and Willow Creek. Historical industrial activity is evidenced by the Old RR Grade winding through the southern portion of the quadrangle, a remnant of former transportation networks in this high-altitude region. Engineering from the later 20th century is also visible with the inclusion of the Azotea Tunnel. Smaller landmarks such as Clydes Corral Lake and Las Ranas Lake provide specific points of reference for those tracing early land use and topography within the Rio Arriba and Archuleta county lines.