10 a.m.-1 p.m. – Join National Park Service Ranger Jerry Hightower for a hike through a forest that was once home to American Indians. Visit the largest natural rock shelter in the park, and hear about the Indians’ use of available resources to survive and prosper. $3 daily park pass; $25 annual park pass required. Call 678-538-1200 to make a reservation. Chattahoochee River National Recreation Area, Palisades unit, Whitewater Creek Rd., NW, Sandy Springs, 30327. Visit: www.nps.gov for details.