
The Pechanga Indian Reservation and Pala Indian Reservation dominate this landscape along the Riverside and San Diego county line in the late 1990s. The region is marked by a legacy of gem mining, with several significant sites concentrated near Tourmaline Queen Mountain, including the Tourmaline Queen Mine, Pala Chief Mine, and the Stewart Mine. These workings indicate the area's geological importance for tourmaline and other minerals within the Peninsular Ranges.
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1901 · Southern California Sheet No. 1
USGS Topo · 1:250,000
1901 · San Jacinto
USGS Topo · 1:125,000
1901 · Elsinore
USGS Topo · 1:125,000
1901 · San Luis Rey
USGS Topo · 1:125,000
1903 · Ramona
USGS Topo · 1:125,000
1904 · Southern California Sheet No. 2
USGS Topo · 1:250,000
1904 · Southern California Sheet No. 1
USGS Topo · 1:250,000
1939 · Palomar Mountain
USGS Topo · 1:62,500
1942 · Temecula
USGS Topo · 1:62,500
1942 · Hemet
USGS Topo · 1:62,500