Marker Logo HMdb.org THE HISTORICAL
MARKER DATABASE
“Bite-Size Bits of Local, National, and Global History”
“Bite-Size Bits of Local, National, and Global History”
Near Diablo in Contra Costa County, California — The American West (Pacific Coastal)
 

Mount Diablo

 
 
Mount Diablo Marker image. Click for full size.
By Karen Key, March 8, 2009
1. Mount Diablo Marker
Inscription. Mount Diablo, sacred to Native Americans who lived and worshipped there for over 5,000 years became a critical reference point for Spanish explorers in the 18th century, and American trappers and early California settlers in the 19th. In 1851 Colonel Leander Ransome established the crossing of the Mount Diablo Base and meridian lines from which most of California and Nevada are surveyed.

California Registered Historical Landmark No. 905

Plaque placed by the State Department of Parks and Recreation in cooperation with the San Ramon Valley Historical Society, April 23, 1978.
 
Erected 1978 by State Department of Parks and Recreation in cooperation with the San Ramon Valley Historical Society. (Marker Number 905.)
 
Location. 37° 52.9′ N, 121° 54.85′ W. Marker is near Diablo, California, in Contra Costa County. Marker is on Summit Road, on the right when traveling north. Click for map. Marker is in this post office area: Diablo CA 94528, United States of America.
 
Other nearby markers. At least 8 other markers are within 5 miles of this marker, measured as the crow flies. Mount Diablo Beacon: (a few steps from this marker); Mt Diablo State Park (a few steps from this marker); Blackhawk Ranch Quarry
Mount Diablo Marker image. Click for full size.
By Karen Key, March 8, 2009
2. Mount Diablo Marker
(approx. 2.4 miles away); History of Marsh Creek Springs (approx. 3.5 miles away); Old Marsh Creek Springs (approx. 3.5 miles away); Whitegate Farm (approx. 4.2 miles away); The Clayton Post Office (approx. 4.2 miles away); Endeavor Hall (approx. 4.2 miles away).
 
Also see . . .  Mount Diablo State Park. (Submitted on April 2, 2009, by Karen Key of Sacramento, California.)
 
Categories. LandmarksNative AmericansNotable PersonsSettlements & Settlers
 
Mount Diablo Summit Building image. Click for full size.
By Karen Key, March 8, 2009
3. Mount Diablo Summit Building
View from the Summit Observation Deck image. Click for full size.
By Karen Key, March 8, 2009
4. View from the Summit Observation Deck
Mt. Zion Diabase Quarry to the North
View from the Summit Observation Deck image. Click for full size.
By Karen Key, March 8, 2009
5. View from the Summit Observation Deck
Looking Southeast
View from the Summit Observation Deck image. Click for full size.
By Karen Key, March 8, 2009
6. View from the Summit Observation Deck
Looking Northwest to the Bay
View from the Summit Observation Deck image. Click for full size.
November 21, 2007
7. View from the Summit Observation Deck
Looking Northeast towards Sacramento.
Mount Diablo National Natural Landmark Marker image. Click for full size.
By Karen Key, March 8, 2009
8. Mount Diablo National Natural Landmark Marker
Mount Diablo National Natural Landmark Marker image. Click for full size.
By Karen Key, March 8, 2009
9. Mount Diablo National Natural Landmark Marker
View of North Peak of Mount Diablo from Marsh Creek Springs image. Click for full size.
March 22, 2009
10. View of North Peak of Mount Diablo from Marsh Creek Springs
 
 
Credits. This page originally submitted on , by Karen Key of Sacramento, California. This page has been viewed 1,945 times since then and 107 times this year. Photos:   1, 2, 3, 4, 5, 6. submitted on , by Karen Key of Sacramento, California.   7. submitted on .   8, 9. submitted on , by Karen Key of Sacramento, California.   10. submitted on . This page was last revised on June 16, 2016.
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