Bedrock mortars used by Native Americans for pounding acorns that were found in the area are reminders of Sunol's first inhabitants. For the past century, however, the land known today as Sunol Wilderness Regional Preserve was used almost exclusively as ranch land. Under the East Bay Regional Park District's multi-use land management policy, cattle continue to graze in the 6,859-acre wilderness. Today, camping, picnicking, hiking and back-packing attract thousands of park visitors a year. Visitors should bring drinking water because there is no drinking water in the park.
The Sunol naturalist staff provides additional opportunities to enjoy the park by leading nature hikes and coordinating special events. They also teach about natural and cultural history to children that meet current State Science and Social Science Curriculum Standards during the school year.