In honor of the USA’s 100th anniversary of the founding of the national park system, all 412 national parks will offer free admission August 25-28. Additionally, USA Secretary of the Interior Sally Jewell, Deputy Secretary Mike Connor and other administration officials will begin a nationwide tour to commemorate the 100th anniversary of the National Park Service.
The pass actually includes admission to more than 2,000 recreation sites. Each pass covers entrance fees at national parks and national wildlife refuges as well as standard amenity fees (day use fees) at national forests and grasslands, and at lands managed by the Bureau of Land Management, Bureau of Reclamation and U.S. Army Corps of Engineers. Further, a pass covers entrance, standard amenity fees and day use fees for a driver and all passengers in a personal vehicle at per vehicle fee areas (or up to four adults at sites that charge per person). Children age 15 or under are admitted free.
Info provided by US Department of the Interior