Tungsten (historical) serves as the namesake for this landscape defined by a high concentration of hard-rock mining operations. The density of mining claims near Hurricane Hill and Tungsten Mountain is exceptional, including the Crucible Steel Mine, Vasco Number Seven Mine, and the Nancy Henderson Mine. This mineral wealth supported a network of small settlements and camps throughout the rugged drainages of Middle Boulder Creek and South Boulder Creek, where community life was anchored in places like Rollinsville and Pinecliffe.
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1899 · West Denver
USGS Topo · 1:125,000
1902 · Boulder
USGS Topo · 1:62,500
1904 · Boulder
USGS Topo · 1:62,500
1905 · Central City
USGS Topo · 1:62,500
1906 · Blackhawk
USGS Topo · 1:62,500
1910 · Central City
USGS Topo · 1:62,500
1912 · Central City
USGS Topo · 1:62,500
1915 · Longs Peak
USGS Topo · 1:125,000
1919 · Rocky Mountain National Park
USGS Topo · 1:125,000
1942 · Eldorado Springs
USGS Topo · 1:24,000