Lava Crack Spring and the surrounding volcanic terrain of Siskiyou County are the focus of this 2012 survey. The landscape is defined by elevated landforms including Snag Hill, Papoose Hill, and Powder Hill, as well as the prominent ridge of Chippy Spur. The network of travel through this region is largely defined by US Forest Service routes and unpaved roads, primarily Medicine Lake Rd and Davis Rd. While there are no established settlements on this sheet, the complex web of numbered forest routes like Forest Rte 13 and Forest Rte 40 indicates a landscape managed for timber and resource access rather than residential development. This modern topographic record captures the area's geological features and the intricate infrastructure required for navigating the high-country terrain of Northern California.
51 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
1950 · Bray
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
1961 · Bartle
USGS Topo · 1:62,500