Somersville, California

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Coordinates: 37°57′25″N 121°51′52″W / 37.95694°N 121.86444°W / 37.95694; -121.86444

Former settlement
Somersville is located in California
Location in California
Coordinates: 37°57′25″N 121°51′52″W / 37.95694°N 121.86444°W / 37.95694; -121.86444
Country United States
State California
County Contra Costa County
Elevation1 741 ft (226 m)

Somersville (also, Sommerville and Summerville)1 is an unincorporated ghost town in eastern Contra Costa County, California.2 It is located 6 miles (10 km) north-northeast of Mount Diablo,3 at an elevation of 741 feet (226 m).1

Somersville was founded in the 1850s2 by gold miners. The town is no longer populated and is within the boundaries of the East Bay Regional Park District's Black Diamond Mines Regional Park.2 Somersville Road was named after the town; it is a major north-south arterial trunk road in the closest existing neighbor: Antioch. Somersville's ruins contain a fairly extensive amount of graves in its cemetery,2 many of whom are dead miners who died in accidents in the coal mines.2 The Somersville mines are now sealed to prevent entry due to frequent incidents of people becoming lost inside them during the mid 20th century.2

A post office operated at Somersville from 1863 to 1910.3 The name is in honor of Francis Somers, coal mine founder.3

See also


  1. ^ a b c U.S. Geological Survey Geographic Names Information System: Somersville, California
  2. ^ a b c d e f SOMERSVILLE,, retrieved September 12, 2007
  3. ^ a b c Durham, David L. (1998). California's Geographic Names: A Gazetteer of Historic and Modern Names of the State. Quill Driver Books. p. 704. ISBN 9781884995149. 

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