Summerville, California

Somersville is an unincorporated ghost town in eastern Contra Costa County, California. It is located 6mi north-northeast of Mount Diablo, at an elevation of 741 feet .Somersville was founded in the 1850s 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. 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, many of whom are dead miners who died in accidents in the coal mines. The Somersville mines are now sealed to prevent entry due to frequent incidents of people becoming lost inside them during the mid 20th century.A post office operated at Somersville from 1863 to 1910. The name is in honor of Francis Somers, coal mine founder.A reporter for the Antioch Ledger, May 7, 1870 described the town: "...Somersville has a four general merchandise stores, one drug store, one hotel, two large boarding houses, several minor ones, a doctor, barber, shoemaker, no tailor, four saloons, purs et simple, not counting liquors dispensed at groceries. As an offset, we have a flourishing Lodge of Good Templars and Sons of Temperance. Odd Fellows and Red Men each have an organization. A Protestant and a Catholic Church shed their humanizing influence around, both being well attended. The public school is maintained nearly all the year round, by a special tax when the State funds fails; from seventy-five to one hundred scholars is the average daily attendance. There are two departments, and two lady teachers, under whose painstaking auspices the fundamental branches flourish."