The U.S National Park Service is celebrating the 25th anniversary of National Public Lands fee-free on Sept. 22.
Visitors who visit any federally managed lands will be allowed to enter the park free of charge.
The fee-free designation does not affect fees for camping, reservation, tours or use of concessions.
Visitors who plan on spending time in the parks beyond Sept. 22 will need to pay the regular entrance fee for the remainder of their stay.
The Coronado National Forest will hold an event in the Sabino Canyon Recreation area.
Near the Sabino Canyon Visitor Center, the Sabino Canyon Volunteer Naturalists will host a Junior Ranger table with activities for young children. Arizona Game and Fish will be there with an educational display and information on Arizona Wildlife.
Volunteers are needed from 8 a.m. to 3 p.m. to work on a project planned by the Forest Sky Island Alliance. The volunteers will aid in the restoration of the area to a more natural setting and reduce competition between native and non-native, invasive plants.
Volunteers should meet at 8 a.m. at the south end of the Safeway parking lot at 7177 E. Tanque Verde Road to carpool to the work site.
Volunteers should wear layered clothing, long pants and long-sleeved shirts, as well as bring water, snacks, lunch and sun protection items.
Sky Island Alliance will provide tools, work gloves, supplemental drinking water and first aid equipment.
The next fee-free day will be November 11, in honor of Veterans Day.