The Purisima Hills are a northwest-to-southeast trending low mountain range of the Outer Southern California Coast Ranges, located in Santa Barbara County, California. They divide the Santa Ynez Valley on the south from the Los Alamos Valley on the north.

Purisima Hills
Looking North towards Los Alamos from Drum Canyon Road.
Geography
Location in California
Country	United States
State	California
County	Santa Barbara
Range coordinates	34°41′05″N 120°16′18″W[1]
Parent range	California Coast Ranges

They are the location of the economically important Lompoc Oil Field.

The Purisima Hills are the southernmost location in the current natural range of the coast Douglas-Fir (Pseudotsuga menziesii var. menziesii).

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