No roads, phone service, Internet, or campsites. That's how it is in Alaska's most remote national parks, and Kobuk Valley is no exception. The upside? No crowds, unless you count the half-million ...

Experience the Arctic Circle on American soil at Kobuk Valley National Park—one of the most remote ... See vast, pristine, awe-inspiring landscapes, including three major sand dune systems covering ...

A unique combination of sand and snow transformed a Colorado national park into an otherworldly winter wonderland, a stunning photo shows. The phenomenon occurs about once a week in Great Sand Dunes ...