
Thunder Basin National Grassland dominates this portion of Weston County, where a complex network of ranching and utility roads crisscrosses the high plains. The small settlement of Clay Spur serves as a focal point near the southern edge, situated along Clayspur Rd and just north of Old US Hwy 16. This area is defined by its drainage systems and water management, with the Kellog Reservoir providing a vital resource in an arid landscape marked by seasonal draws and creeks. The terrain transitions from the elevations of Piney Ridge in the north to the distinctive Shale Hill in the southeast. Numerous trails, including the Kellog Trl and Sunquist Trl, suggest a landscape utilized for both local access and resource management, while several canyons like Bertha Canyon break the western horizon.
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This is the sole edition of this map. No revisions or reprints were ever made.
1898 · Sundance
USGS Topo · 1:125,000
1899 · Newcastle
USGS Topo · 1:125,000
1901 · Newcastle
USGS Topo · 1:125,000
1902 · Sundance
USGS Topo · 1:125,000
1918 · Moorcroft
USGS Topo · 1:125,000
1954 · Gillette
USGS Topo · 1:250,000
1955 · Newcastle
USGS Topo · 1:250,000
1955 · Gillette
USGS Topo · 1:250,000
1957 · Upton
USGS Topo · 1:62,500
1958 · Gillette
USGS Topo · 1:250,000