Vasco Caves

Contra Costa County, East Bay, California · Regional Preserve

A protected East Bay Regional Park District preserve on the eastern slopes of Mount Diablo, featuring ancient Native American rock art, volcanic cave formations, and habitat for endangered species including red-legged frogs and golden eagles. Accessible by reservation-only guided tours.

Visiting

Fees — District Shuttle: $0, Fall–Spring Tours: $0.

Parking: Visitors park at one of two external staging areas — Round Valley or Brushy Peak — and are transported into the preserve by a District-provided bus; there is no parking at the preserve itself. Parking fees at the staging areas were not listed in official sources.. No dogs. Phone: 1-888-327-2757.

Coordinates: 37.8051, -121.6869. Official website.

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