Mt Diablo State Park

Mt Diablo State Park (HM1RHL)

Location: Walnut Creek, CA 94598 Contra Costa County
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Country: United States of America
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N 37° 52.895', W 121° 54.865'

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What's In A Name?

Like many other isolated peaks, Mt. Diablo is steeped in lore - much of it involving the mountain's name.
On a 1824 map, "M. del Diablo" signifies a Christian Indian village, not a peak. The reference to "diablo" or devil can be traced back to 1804 or 1805, when a Spanish military expedition visited the area in search of runaway missions Indians.
At a willow thicket several miles northeast of here, (near present-day Buchanan Field) the soldiers encountered a village of Chupcan people and surrounded it. But that night, evidently all the Indians escaped. Angry and confused, the Spanish called the site "Monte del Diablo" or Thicket of the Devil." Later English-speaking newcomers mistakenly applied the title to this prominent East Bay peak. A linguistic accident thus gave California its Devil Mountain.
General Mariano Vallejo's account was somewhat different. In an 1850 version, Vallejo placed the incident at the foot of Mt. Diablo, claiming that the Spanish were routed when an "unknown personage" or "evil spirit" appeared. In 1914 Vallejo's son, Platon, made his father the hero who lassoed this "agent of his master, the devil."

The Mount Diablo Survey Marks

With its unobstructed view, Mt. Diablo's summit has long been an important reference point for land surveys in the far west. In 1851, Col. Leander Ransome began subdividing the public lands by establishing the Mt. Diablo initial point. From this point, lines were extended north, south, east and west forming a survey grid that covers most of northern California and all of Nevada.

Mount Diablo State Park

On August 2, 1921 - with Senator W. Starkey as the main supporter - a bill was signed into law creating a state park on top of Mt. Diablo. In 1931, Mt. Diablo was re-dedicated as a unit of the newly born State Division of Beaches and Parks.

The Summit Building

Between 1933 and 1942 Civilian Conservation Corps workers transformed the young park constructing roads and trails, ranger residences, and many of the camp and picnic facilities used by visitors today. This stone summit building is literally the CCC's crowning achievement on Mt. Diablo.
Series This marker is part of the series
Placed ByMt Diablo State Park
Marker ConditionNo reports yet
Date Added Tuesday, April 5th, 2016 at 5:01pm PDT -07:00
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Locationbig map
UTM (WGS84 Datum)10S E 595465 N 4193231
Decimal Degrees37.88158333, -121.91441667
Degrees and Decimal MinutesN 37° 52.895', W 121° 54.865'
Degrees, Minutes and Seconds37° 52' 53.7" N, 121° 54' 51.9" W
Driving DirectionsGoogle Maps
Area Code(s)925, 510, 707
Which side of the road?Marker is on the right when traveling West
Closest Postal AddressAt or near Summit Rd, Walnut Creek CA 94598, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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