Chumash Peak is one of the Nine Sisters (or Moros, or Seven Sisters for people who can't count) in San Luis Obispo County, a small range of volcanic peaks that form a striking skyline over highway one on the drive out to Moro Bay. In terms of elevation, these peaks would barely scrape by as hills by most standards, the highest is Bishop Peak
at just over 1500 feet. Nevertheless as hills go their craggy rugged volcanic nature make them quite interesting.
Chumash peak was named for in honor of the Chumash Indians who lived in the San Luis Obispo and Los Osos areas. Though not as high as its neighbors, Bishop peak and Cerro Romauldo, Chumash is one of the more interesting Moros with its large east face and summit plug defining the skyline over northern San Luis Obispo. Unfortunately the peak is still being quarried today.
Chumash Peak Cerro Romauldo and Hollister Peak
The route begins on the Bishop Peak trail. The trail has three trailheads the most convenient is located at the end of Highland Drive.
Highland Drive Trailhead: From San Luis Obispo, take the exit for Route 1 (Santa Rosa street). Near the outskirts of town, turn left on Highland Drive and follow it to its end. Details for attaining the summit can be found in the route page
East face and Cal Poly in the background
About half the peak, including the false summit is on a National Guard base. The other half is on ranch land. When trespassing on a military facility there is always the possibility that you may have your head shot off. Do not hike here if you are not willing to accept this risk.