Looking west through San Pasqual Valley from the summit of the Clevenger Canyon South Trail. Enjoy this view in person on our Holiday Hike with Trish Boaz, Executive Director of the San Dieguito River Valley Conservancy on December 17th, 8:30 a.m. This area is known for its peaks and steeply sloped canyons. The valley itself actually developed over a local fault, and an immense amount of granite lies under most of the region. Reddish, coarse, sandy loam covers the hillsides as a result of weathered remains from exposed batholith.
These hillsides support a unique plant community known as southern mixed chaparral, which is dominated by chamise, ceanothus and scrub oak. Clevenger Canyon also contains many specimens of rare Englemann Oak which provides food and shelter for an abundance of wildlife. Although poison oak berries are noxious to humans, many species find them to be a valuable food source.