Black Diamond Mines Regional Preserve

5175 Somersville Road, Antioch, CA 94509
Hazel-Atlas Mine

Inside the Hazel-Atlas Mine at Black Diamond Mines Regional Preserve.

Photo credit: By Heather Grimes (Own work) [CC BY-SA 3.0], via Wikimedia Commons

The Black Diamond Mines Regional Preserve is a 6,000-acre park located north of Mount Diablo in Contra Costa County, California. The East Bay Regional Park District acquired the property in 1973. The preserve contains relics of 3 mining towns, and former coal and sand mines. The district offers guided tours of a former sand mine. From 1850 to 1906, the area was known as the Mount Diablo Coalfield, the largest in California, producing more than 400×106 short tons of coal during this time. Rose Hill Cemetery, the final resting place for over 200 residents of the coalfield, is located on a hillside between the Somersville and Nortonville townsites. The cemetery is reputed to be haunted by the ghost of Sarah Norton, a locally famous midwife who met a violent death in October, 1879, by a run-away horse pulling her carriage.

This description includes material adapted from the Wikipedia article "Black Diamond Mines Regional Preserve", which is released under the Creative Commons Attribution-Share-Alike License 3.0. It has been edited for brevity and to conform with the style of this website. The edited description is distributed under the terms of the same Creative Commons Attribution-Share-Alike License 3.0 license.