| Robert Sibley Volcanic Regional Preserve | |
|---|---|
 View from Round Top at Sibley Volcanic Regional Preserve | |
 | |
| Location | Alameda and Contra Costa Counties, California |
| Nearest city | Oakland, California |
| Coordinates | 37°51′18″N 122°12′12″W / 37.85495°N 122.20326°W |
| Area | 928 acres (3.76 km2) |
| Created | 1936 |
| Operated by | East Bay Regional Park District |
Robert Sibley Volcanic Regional Preserve is located in the Oakland Hills of the East Bay region of the San Francisco Bay Area, California.[1] The park is part of the East Bay Regional Parks District (EBRPD), covers 928 acres (3.76 km2), and lies east of Oakland, partly in Alameda County and partly in Contra Costa County. It can be entered from Oakland via Skyline Boulevard, or from Contra Costa County via Old Tunnel Road.[1]
- ^ a b "EBRPD - Sibley". www.ebparks.org. Retrieved 2021-05-11.