
Granite Butte stands as a prominent landmark within this high-elevation portion of the Helena National Forest. The landscape is defined by the headwaters of numerous drainages, most notably the Little Prickly Pear Creek system and South Fork Poorman Creek. The modern-day Continental Divide National Scenic Trl traverses the crests of Cayuse Ridge and the surrounding summits, following the natural topographic boundary between Atlantic and Pacific watersheds.
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This is the sole edition of this map. No revisions or reprints were ever made.
1889 · Helena
USGS Topo · 1:250,000
1893 · Helena
USGS Topo · 1:250,000
1899 · Helena
USGS Topo · 1:250,000
1903 · Helena
USGS Topo · 1:250,000
1947 · Butte
USGS Topo · 1:250,000
1958 · Butte
USGS Topo · 1:250,000
1958 · Avon
USGS Topo · 1:62,500
1959 · Elliston
USGS Topo · 1:62,500
1960 · Butte
USGS Topo · 1:250,000
1962 · Butte
USGS Topo · 1:250,000