All national parks will waive entrance fees on April 18 and 19, during the beginning of National Park Week. This year's theme introduces the National Park Service 2016 Centennial message, "Find your Park". The 2015 National Park Week runs from April 18 to April 26, 2015.
A special highlight will be the pilot testing of new junior ranger booklet activities on April 19, which is Junior Ranger Day at Haleakalā. On Junior Ranger Day kids who complete one new activity will receive a sticker;kids who complete three activities will get a junior ranger badge. The booklet will be improved and revised as needed based on their feedback. The final, completed booklet will be published this summer.
Throughout the week visitors can play national park trivia games in all park visitor centers and participate in daily talks, hikes, and cultural demonstrations. Activities will be posted at all visitor centers.
Source: U.S. Department of the Interior, National Park Service