I've hiked and backpacked in five U.S. National Parks, and all of them featured stunning vistas and made for amazing, memorable trips. In all of those parks, though, hiking buddies and I always end up purchasing a big, sturdy map, and the go-to publisher is the National Geographic Society. Their "Trails Illustrated" map series is just fantastic. It turns out that the National Geographic Society has done something even more people-friendly and amazing: They took all their maps of 15 U.S. National Parks and crammed them into a single iPhone- and iPad-compatible app.
Source: TechNewsWorld