This was a beautiful hike, with perfect weather and the hills covered with wildflowers. We followed Volvone Trail to its end, doing the loop around Bob Walker Ridge. The hike was about 6 miles and took us about 3 hours. We had never gone that far before, so it was wonderful to get the views of the Delta and Central Valley from that vantage point. Also had some spectacular views of Mt. Diablo. It was not a particularly difficult hike, so we enjoyed it very much.