Timbered Crater and Brushy Butte dominate the landscape of this high-elevation region where Shasta, Siskiyou, and Modoc counties meet. The area is defined by its volcanic geology and extensive forest management, falling within the boundaries of both Shasta National Forest and Modoc National Forest. Water resources are central to the land use here, with several engineered basins including Adobe Flat Reservoir, Gassaway Reservoir, and Green Place Reservoir distributed across the terrain. These sites, along with features like Little Hot Spring and the expansive Big Lake in the southeast, suggest a landscape carefully managed for both timber and water retention. Transportation is dictated by utility and logging needs, with the Pit Gas Pipe line and roads such as McNab Road and Co Road 272 providing the primary access through the Whitehorse Mountains and Big Valley Mountains.
29 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1886 · Modoc Lava Bed
USGS Topo · 1:250,000
1892 · Modoc Lava-Bed
USGS Topo · 1:250,000
1932 · Bartle
USGS Topo · 1:96,000
1939 · Bartle
USGS Topo · 1:125,000
1954 · Alturas
USGS Topo · 1:250,000
1958 · Alturas
USGS Topo · 1:250,000
1961 · Hambone
USGS Topo · 1:62,500
1961 · Pondosa
USGS Topo · 1:62,500
1961 · Fall River Mills
USGS Topo · 1:62,500
1962 · Alturas
USGS Topo · 1:250,000