Timbered Crater and the surrounding volcanic field dominate this landscape at the junction of Shasta, Modoc, and Siskiyou counties. The terrain is characterized by cinder cones and lava flows, notably Brushy Butte and the Whitehorse Mountains. This area of the Shasta National Forest is interlaced with specialized roads and trails such as the Spatter Cone Loop Trail and the Lava Springs Trail, indicating a region defined by its geological history. To the north, the small settlement of Day sits near the base of the Big Valley Mountains. Water sources are sparse but significant in this arid volcanic environment, including Gassaway Reservoir, Little Hot Spring, and Horr Pond. Cultural markers like the Pit Indian Cem and various ranch roads, such as Pit Wiley Ranch, offer insights into the land use and heritage of this high-country plateau.
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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