Children of all ages and their favorite adults are invited to the National Junior Ranger Day celebration, 10 a.m.-2 p.m. Saturday, April 24, at the Olympic National Park Visitor Center, 3002 Mount Angeles Road, Port Angeles.

Special activities are scheduled throughout the day, including 40-minute ranger-guided walks at 10:30, 11:30, 12:30 and 1:30.

Microscopes will be set up for in-depth views of insects and plants, the Children’s Discovery Room will be open for play and exploration, and the park’s award-winning film will be shown.

The park’s pack mules will make an appearance between 11 a.m.-noon. Visitors can meet the mules and learn how they help trail crews maintain the park’s 600-plus miles of wilderness trails.

Children must be accompanied by an adult; all activities are designed for adults, too.

Olympic’s Junior Ranger program is a year-round way to experience and enjoy the park. Children complete Junior Ranger activity booklets, attend a ranger program and explore park nature trails to earn a Junior Ranger badge and certificate.

For more information, call 360-565-3146.