(Somersville Road exit off Highway 4)
Antioch, CA 94509
Black Diamond Mines Naturalist Programs
Join us for our monthly programs!
The Greathouse Visitor Center is located in an underground chamber excavated in the mid-1920s. View the workings of a 20th-century sand mine and learn about the lives of 19th-century coal and 20th-century sand miners. The center contains displays, photographs, and artifacts related to the park’s coal and sand mining eras.
Admission is free. Parking fee is $5 per vehicle on weekends and holidays (Visa/Master Card, cash or check only). For more information, call (510) 544-2750