2015 Map of Idria

About this map

Idria and the surrounding high country of the Diablo Range define this portion of San Benito County. This interior landscape is characterized by its significant elevation changes, anchored by Sampson Peak, Idria Peak, and San Carlos Peak. The settlement of Vallecitos sits further north, connected by the winding New Idria Rd which follows the local topography. This region is defined by a series of distinct upland features, including the Griswold Hills and Tumey Hills, while water resources like San Carlos Cr and Larious Spring carve through the canyons. The presence of San Carlos Bolsa and Tumey Gulch further illustrates the complex drainage patterns of this high-elevation terrain, which has historically been known for its mineral resources and isolated mountain ranching operations.