Did this hike in mid May. Wildflowers in full bloom, the initial descent along the single track coyote trail is very shady, watch out for poison oak crowding the trail. The trail soon turns into a shady stroll along the upper reaches of Marsh Creek, just enough water to occasionally hear it speaking to you. As you turn onto the Stone Corral portion of the trail the landscape changes dramatically to wide open grass covered hills to start the ascent back to the ridge. Best to do this stretch in the morning as there is little shade as you make a gentle climb with a couple steeper sections. It levels off when you hit the Volvon trail with some nice vistas of the Central Valley and Mt. Diablo. A lovely peaceful hike.