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1985 Map of State Line Pass

Name: 1985 Topographic Map of State Line Pass
Creator: U.S. Geological Survey
Published: 1985
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1985

About this map

Christmas Mine and New Year Mine sit high in the rugged terrain where the Spring Mountains meet the State Line Hills, reflecting the mineral prospecting history of this border region. The landscape is defined by its extreme topography, rising from the dry flats of Roach Lake and Ivanpah Valley up toward the crags of Devil Peak and Little Devil Peak.

One of the most significant historical features is the Von Schmidt Boundary, a former state line survey that cuts through the Clark Mtn Range. This line underscores the difficulty of early surveying in the desert, running just north of the current Nevada California border. The map documents numerous smaller workings like the Brandy Mine and Umpire Perlite Mine, which trace the path of miners who used State Line Pass to navigate between the Mesquite Valley and the eastern basins.