Gary Prost's new book is about his journey across the state from the Marin headlands to the wine country, from the gold fields to Death Valley, to learn about the geology of this amazing state.
Gary Prost book explores California’s geology

Gary Prost's new book is about his journey across the state from the Marin headlands to the wine country, from the gold fields to Death Valley, to learn about the geology of this amazing state.