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1997 Map of In-ko-pah Gorge

Name: 1997 Topographic Map of In-ko-pah Gorge
Creator: U.S. Geological Survey
Published: 2003
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2003

About this map

The Jacumba Mountains dominate this high-desert landscape along the United States-Mexico border, where the steep canyons and rocky terrain defined early travel routes through the region. A Stage Station Historical Marker near Mountain Spring serves as a reminder of the corridor's role as a vital passage for travelers and freight moving between the coast and the inland desert. The topography is deeply incised by Devils Canyon and the In-Ko-Pah Gorge, revealing the difficult geography that early road builders and miners had to navigate.

Scattered mining operations, including the Little Randsburg Mine, Mica Gem Mine, and Easy Pickins Mine, are found across the rugged peaks and valleys like Davies Valley. The presence of these sites, alongside protected lands such as Anza Borrego Desert State Park and In-Ko-Pah County Park, illustrates the dual history of resource extraction and preservation in this corner of Imperial and San Diego counties.