Gem of the East Bay: Rock City Trail at Mt Diablo State Park - 510 Families
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Gem of the East Bay: Rock City Trail at Mt Diablo State Park

You and your kiddo will love to climb around the wind-hollowed caves and giant rocks at Rock City on Mt. Diablo.

Mt. Diablo State Park is near Walnut Creek (North Gate Road into the park) and Danville (South Gate Road).

Within the park there are numerous hiking trails and recreation areas; Rock City is just one of them.

Gem of the East Bay: Rock City trail at Mt Diablo State Park
Squeezing into a smaller Rock City cave | Photo: Christa Dahlstrom

Access Rock City via South Gate Road which you’ll reach by driving on Mt Diablo Scenic Road from Danville. Well-marked with plenty of parking, this area is “great rock-scampering and sandstone wind caves for explorers of all ages,” said East Bay mom Christa Dahlstrom when she shared her photos with us.

Plan your visit to Rock City

Rock City Cave is big enough to share | Photo: Christa Dahlstrom

Tips for Visiting Rock City

  • This adventure is not for strollers! You will be leaving the main path to explore the rock formations.
  • Be sure to bring water, as the faucets in the park are not always in operation.
  • Don’t miss Tarantula breeding season (!) at the end of the summer, also at Mt. Diablo. The East Bay Regional Parks District runs programming to help you learn about these critters (safely!)
Climb in a cave at Rocky City
Climb in a cave at Rock City | photo provided by Trackers
Rock City Climbing
Rock City is a natural wonderland of rocks, caves and tunnels. | Photo: Maureen Burke

Rock City, Mt Diablo


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Where the heck is this place?

Where is Rock City?

Find more terrific outdoor outings for Bay Area kids >

Rock City Caves
Climb into one of the many caves at Rock City | Photo: Maureen Burke

If you find yourself dragging kids to The Container Store or some other Walnut Creek destination, keep this little adventure in your back pocket.


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