
Subterranean geological features define this high-elevation landscape within the Shasta-Trinity National Forests during the late 1990s. The map highlights the unique volcanic topography of the region, specifically marking the Water Caves in the northeast and the Ice River Caves near Chippy Spur further south. These landmarks, along with hydrology points like Lava Crack Spring and Lost Iron Well, suggest a terrain shaped by lava flows and volcanic activity rather than standard erosion.
13 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