
The high volcanic plateau of northern California defines this section of the Modoc National Forest, where the border between Siskiyou and Modoc counties runs through a landscape of lava and peaks. Prominent volcanic features like the Glass Flow and high points such as Lyons Peak and Black Mtn dominate the terrain. This is a region of sparse infrastructure, characterized by a network of specialized routes including the Medicine Lake Hwy, the South Connector, and winding paths like Lost Loop. The mapping of areas like Mud Flats alongside these high-altitude peaks illustrates the complex hydrology and geography of the volcanic Cascades, providing a technical look at the timber and recreation lands in the early 21st century.
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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
1952 · Timber Mountain
USGS Topo · 1:62,500
1952 · Medicine Lake
USGS Topo · 1:62,500
1954 · Alturas
USGS Topo · 1:250,000
1958 · Alturas
USGS Topo · 1:250,000
1961 · Hambone
USGS Topo · 1:62,500
1962 · Alturas
USGS Topo · 1:250,000