
Mining operations and high-altitude terrain dominate this section of the Flint Creek Range along the boundary of Granite and Powell counties. The landscape is heavily marked by late 20th-century resource extraction, centered around the Master Mining Camp and numerous workings like the Port Royal Mines and Gold Creek Mine. These sites are concentrated along the steep drainages of Gold Creek and Little Gold Creek, where prospectors sought minerals along the Deerlodge Philipsburg Ridge.
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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
1908 · Philipsburg
USGS Topo · 1:125,000
1919 · Drummond
USGS Topo · 1:125,000
1921 · Drummond
USGS Topo · 1:125,000
1947 · Butte
USGS Topo · 1:250,000
1958 · Butte
USGS Topo · 1:250,000
1958 · Drummond
USGS Topo · 1:62,500