1983 Map of Silurian Hills

About this map

Valjean Valley and the rugged Silurian Hills dominate this Mojave Desert landscape, which preserves the remnants of early 20th-century mining and transit. The map identifies the former locations of Valjean and Riggs, both designated as sites by the 1980s, providing a reference for those studying the ghost towns of San Bernardino County. Historically significant infrastructure is visible in the form of the Old RR Grade, which cuts through the valley floor. Near the southern edge of the hills, the Riggs Mine and various prospects indicate the mineral exploration that once drew settlers to this arid region. The drainage of Kingston Wash provides a primary geographical landmark in the northern section, while numerous bench marks from 1909 and 1979 surveys, such as Usgs BM 44, offer precise data points for historical geodetic study.