The Potrero Ridge Open Space is a passive recreation area in the southwestern portion of Newbury Park, CA and the Conejo Valley that encompasses eastern parts of the Potrero Ridge.

[1][2] The open-space area contains a total of 203 acres (82 ha), and is owned and operated by the Conejo Open Space Conservation Agency (COSCA).

Some of the fauna here includes mountain lions, bobcats, coyotes, mule deer, golden eagles, American black bears, and reptiles such as the Western pond turtle and freshwater fish species in the Arroyo Conejo.

[4] There are more than ten trailheads to access the open-space area, and some of the flora includes oak woodlands, coastal sage scrub and chaparral.

“Potrero” means a farm for rearing horses or pasture ground in Spanish.