Black Diamond Mines Regional Preserve/ Greathouse Visitor Center/ Antioch/ California
Channel: Revathi Raja Kumar
Date: 2023-07-11

Black Diamond Mines Regional Preserve was established by the East Bay Regional Park District in the early 1970s. Currently, most of the mining district is contained within the Preserve's nearly 8,533 acres. Nature study, hiking, and picnicking are all popular activities in the area.
An underground chamber excavated in the mid-1920s houses the Greathouse Visitor Center in Black Diamond Mines Regional Preserve. Explore a 20th-century sand mine and learn about coal miners from the 19th century and sand miners from the 20th century. Coal mining and sand mining era displays, photos, and artifacts are on display in the center.

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