2018 Map of Monumental Pass

About this map

Sacramento Mountains dominate the upper half of this 2018 survey, providing the namesake backdrop for Monumental Pass. The terrain here transitions from these high desert ridges down into the expansive Mojave Desert and the southern Chemehuevi Valley. This arid landscape is largely defined by its natural topography, though human transit is marked by the path of US Rte 95 as it cuts through the eastern edge of the quadrangle. Travelers through this portion of San Bernardino County navigate the elevation changes at Lobecks Pass and access the desert interior via local routes like Stonehill Rd. The map illustrates the stark geography south of Needles, showing a region where the land's form dictates the limited corridors for infrastructure and settlement.