
The Diabolo Range wilderness within Henry W Coe State Park is defined by its complex network of seasonal drainages and steep ridges as they appeared in the mid-1950s. The landscape is dominated by the canyons of Mississippi Creek, Pacheco Creek, and the East Fork Coyote Creek, where topography rises sharply toward summits like Bear Mtn. Settlement remains sparse and restricted to natural clearings such as Poverty Flat and Paradise Flat, reflecting the area's transition from cattle ranching to public conservation. Evidence of modern infrastructure is limited to the Radio Relay Sta and a network of fire trails and ridges including Rock House Ridge and Blue Ridge. Notable local landmarks like Manzanita Point and Hoover Lake serve as key navigational markers in this remote section of the Santa Clara and Stanislaus county borderlands.
26 named features on this map. Tap any name to fly to it.
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4 editions found
1897 · Mt. Hamilton
USGS Topo · 1:62,500
1917 · Morgan Hill
USGS Topo · 1:62,500
1921 · Gilroy Hot Springs
USGS Topo · 1:62,500
1938 · Mt. Boardman
USGS Topo · 1:62,500
1939 · Morgan Hill
USGS Topo · 1:62,500
1939 · Gilroy Hot Springs
USGS Topo · 1:62,500
1940 · Gilroy Hot Springs
USGS Topo · 1:62,500
1941 · Morgan Hill
USGS Topo · 1:62,500
1942 · Mt. Hamilton
USGS Topo · 1:62,500
1942 · Mt. Boardman
USGS Topo · 1:62,500