
Leonards Hot Springs and the geothermal activity of the Surprise Valley basin define this desert landscape on the edge of the Modoc plateau. The western margin is dominated by the expanse of Middle Alkali Lake, where seasonal fluctuations create vast stretches of Alkali Flat and Mud. Human intervention in this arid environment is marked by the Causeway traversing the lakebed and the established Surprise Valley Mineral Wells.
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 · Alturas
USGS Topo · 1:250,000
1889 · Long Valley
USGS Topo · 1:250,000
1892 · Alturas
USGS Topo · 1:250,000
1954 · Vya
USGS Topo · 1:250,000
1954 · Alturas
USGS Topo · 1:250,000
1958 · Alturas
USGS Topo · 1:250,000
1958 · Vya
USGS Topo · 1:250,000
1962 · Alturas
USGS Topo · 1:250,000
1962 · Vya
USGS Topo · 1:250,000
1962 · Cedarville
USGS Topo · 1:62,500