
Ross Hole provides a natural basin for the settlement of Sula, where the East Fork Bitterroot River meets several mountain drainages. This high-altitude valley is framed by the Sapphire Mountains to the north and the Bitterroot Mountains to the south, creating a complex intersection of terrain that has historically dictated travel and land use. Local history is anchored at the Sula Cem and by a network of ranch and forest roads like French Basin Rd and Sula Creek Rd.
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1955 · Dillon
USGS Topo · 1:250,000
1956 · Elk City
USGS Topo · 1:250,000
1957 · Dillon
USGS Topo · 1:250,000
1958 · Dillon
USGS Topo · 1:250,000
1960 · Elk City
USGS Topo · 1:250,000
1960 · Piquett Mountain
USGS Topo · 1:62,500
1962 · Dillon
USGS Topo · 1:250,000
1964 · Robbins Gulch
USGS Topo · 1:24,000
1965 · Dillon
USGS Topo · 1:250,000
1965 · Medicine Hot Springs
USGS Topo · 1:24,000