The area that is now Round Valley Regional Preserve was once home to California Indians. It was probably a boundary between several different tribal groups, an area where members of East Bay and San Joaquin Valley groups met periodically to trade and socialize. Evidence of Native American use has been uncovered at several archaeological sites within the valley.
The preserve is open for hiking, horseback riding and bicycling (with some restrictions). The climate at the preserve is arid and temperatures commonly exceed 100º in the summer months. Be prepared for the summer heat: use sunscreen, wear a hat and loose-fitting clothing and wear good hiking shoes. Drinking water is available at the staging area. Be sure to carry plenty of water with you during your hike.