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”
Walnut Creek in Contra Costa County, California — The American West (Pacific Coastal)
 

Mount Diablo Beacon:

Left Dark by War, Lighted in Remembrance

 
 
Mount Diablo Beacon Marker image. Click for full size.
By Barry Swackhamer, April 1, 2016
1. Mount Diablo Beacon Marker
Inscription. A large flashing light atop this rotunda once guided airplanes flying through the night skies of the Bay Area. Originally held aloft on a 75-foot tower erected by Standard Oil in 1928, it served as a crucial route-finding aid in the days before electronic navigation. Civilian Conservation Corps workers crowned this building with a 10-million candlepower light before the outbreak of World War II. After the 1941 attack on Pearl Harbor it was turned off amid fears it could guide the enemy in attacking the mainland.
Obsolete after the war, the beacon remained dark except for an annual December 7th lighting in memorial to those who died at Pearl Harbor.
 
Erected by California State Department of Parks and Recreation.
 
Marker series. This marker is included in the Civilian Conservation Corps marker series.
 
Location. 37° 52.909′ N, 121° 54.858′ W. Marker is in Walnut Creek, California, in Contra Costa County. Marker can be reached from Summit Road. Click for map. Marker is in this post office area: Walnut Creek CA 94598, 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 (a few steps from this marker); Mt Diablo State Park
Mount Diablo Beacon and Marker image. Click for full size.
By Barry Swackhamer, April 1, 2016
2. Mount Diablo Beacon and Marker
(within shouting distance of this marker); Blackhawk Ranch Quarry (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). Click for a list of all markers in Walnut Creek.
 
More about this marker. This marker is located on the roof of the Mt. Diablo Summit Museum roof in Mt. Diablo State Park.
 
Categories. Air & Space
 
Mount Diablo Tower and Beacon image. Click for full size.
By Barry Swackhamer, April 1, 2016
3. Mount Diablo Tower and Beacon
 
 
Credits. This page originally submitted on , by Barry Swackhamer of San Jose, California. This page has been viewed 191 times since then and 3 times this year. Photos:   1, 2, 3. submitted on , by Barry Swackhamer of San Jose, California. This page was last revised on June 16, 2016.
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