Rockville Hills Regional Park Professional Guide
Detailed Trail Description from our Guidebook
"Climb gently through these volcanic rock hills to a remote, grassy valley with a splendid stand of blue oaks. On your descent, you’ll have views of Mt. Diablo, Elkhorn Peak, and the Twin Sisters. Most trees in the park are deciduous, so on a winter day these trails can be comfortably sunny, yet in summer, the predominant blue-oak forest offers welcome shade. This trip begins on a connector trail to the park’s north entrance and then travels wide, unpaved service roads to a paved trail through a private subdivision."