Greet the New Year with a hike at the Sibley Volcanic Preserve in the East Bay Regional Park District.
The Moraga Formation's distinctive set of volcanic rocks can be visited in many places in the East Bay hills. Let's have a look at five localities.
As sure as the earth moves in Berkeley, there is a volcano just off Skyline Boulevard. Not just any volcano, mind you. This one's laying on its side with its guts exposed. At Sibley Regional Volcanic Preserve, you'll find the rocky body and layered underpinnings of one of the largest volcanoes that once dotted our geologic neighborhood.