Black Diamond Mines Regional Preserve
Class or activity in Antioch · East Bay Regional Park District
- When
- Ongoing — see hours on official site
- Where
- 5175 Somersville Road, Antioch, CA 94509
- Ages
- All ages
historic coal and sand mining country; ranger-led Greathouse underground mine tours (ages 7+); spring wildflowers
Good to know
- Hours and pricing can change; check the official site before you go.