2018 Map of East of Grotto Hills

About this map

The Castle Mountains National Monument and the Mojave National Preserve converge in this high-desert landscape within the Mojave Desert. The topography is dominated by the steep, north-south elevation of the Piute Range, which borders the eastern edge of the quadrangle. Below these peaks, the terrain opens into the Lanfair Valley, a wide basin that demonstrates the traditional public land survey system divisions. This 2018 survey by the U.S. Geological Survey documents the region's protected status and its natural drainage patterns, reflecting the transition from rugged mountain slopes to the alluvial floors characteristic of San Bernardino County's eastern desert reaches.