Canine Caper

December 4, 2021 9:30 a.m. to 12:30 p.m.

Sibley Volcanic Regional Preserve
6800 Skyline Blvd.
Oakland, California 94611
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Phone: (415) 543-6771

Greenbelt Alliance is going to the dogs (and the volcanoes) on this canine-friendly nature walk in Sibley Volcanic Regional Preserve.

Ten million years ago, a geologic convergence called the “triple plate junction” produced the volcanic features seen in the park today. But what strange convergence of forces produced the park’s stone labyrinths? Canine detectives are on the case!

Everyone is welcome (dogs optional).


  • This is a moderate three-mile loop led by Ken Lavin and Daniela Ades with a few hundred feet in elevation change.
  • Rain cancels.
  • Free to attend, RSVP required.
  • We’ll assemble at the main park entrance off Skyline Boulevard in Oakland. There are restrooms at our meeting spot.
Bring snacks, water, hiking poles (if you normally use them), and leash (if bringing a dog); wear layers and good hiking shoes. East Bay Regional Park District rules allow dogs off-leash in much of the park, provided they are in sight and under voice command. However, dogs must be leashed within 200 feet of developed areas. If you have any questions about this outing, contact Ken Lavin at or 415-543-6771 x321.

Cost: Free

© 2021