Barnett Ranch Preserve 
1500 Deviney Ln./San Vicente Rd.
Ramona, CA 92065
619-956-4703
http://www.co.san-diego.ca.us/parks/openspace/Barnett_Ranch.html
Nature Preserve: Birding, Hike, Picnic, Walk
The 728 acre preserve has 4 miles of multi-use trails, viewpoints, picnic table/rest areas.