• Antelope Island State Park will hold a volunteer project. Volunteers can help clear built-up soil along a new three-mile section of the White Rock Bay Trail. The project begins at 9 a.m. Call 801-773-2941.

• Wasatch Mountain State Park will hold a free apple-picking event at Huber Grove. Volunteers can join park staff at 9:30 a.m.There is a $3 per bag fee for apples. Call 435-654-1791.

• Camp Floyd/Stagecoach Inn State Park and Museum Camp Floyd Day will offer stagecoach rides, museum tours, play period games, march and drill with re-enactors. Also, watch a battle and shoot period firearms, see Civil War encampment, and enjoy food, music and entertainment. Call 801-768-8932.

• Snow Canyon State Park will offer a bat program. Eighteen species of bats call Washington County home. Tom Haraden of Zion National Park will hold the clinic at 6 p.m. Space is limited, and registration is required.

• Green River State Park Golf Course's fall two-person scramble: Regular green fees apply, and registration is required. Call 435-564-8882.

Correction

A headline in Thursday's Outdoors section misidentified the track where the Supermodifieds race. It is Rocky Mountain Raceways.