2015 Map of Augustine Pass

About this map

Augustine Pass and Surveyors Pass serve as the primary topographical gateways through the rugged terrain that straddles the boundary between Riverside and Imperial Counties. The map area is defined by the northern reaches of the Chocolate Mountains, an arid landscape marked by steep ridgelines and the seasonal drainage of Arroyo Seco. A significant historical and navigational element of this desert region is the Bradshaw Trl, which traverses the northern sections of the sheet. This historic route, along with Dupont Rd, indicates the established patterns of cross-desert travel in a region where natural passes through the mountain ranges dictated the movement of people and supplies across the Southeastern California desert floor.