And it's not just us ... can use the free National Park Service app to download park-specific information and maps before their visit, in case they lose cell reception in the parks.

With Earth Day coming up on April 22 and National Park Week (April 19-27) here, AllTrails has a can't-miss deal which ...

According to a community announcement, this initiative allows visitors to explore more than 400 national parks across the United States without paying an entrance fee. The designated free entrance ...