Take a roll in the dirt. Kobuk Valley National Park allows visitors to explore a sand dune amusement park, one that’s frequently traversed by migrating caribou. With almost 1.8 million acres of remote backcountry, you won’t run out of outdoor adventures or run into many tourists. Like other parks in the Brooks Range, this region lacks trails and facilities, but that’s part of its allure. Photography, flight-seeing, backpacking, snowmachining, dog mushing and just about anything else you can think of are possibilities here. Fly from Anchorage to Kotzebue and charter a flight to the park. Just come prepared for all types of weather, even snow in summer. Canoeing Sixty-one exceptional miles of the 350-mile Kobuk River flow through the park. Paddlers are expected to fly their own gear into the park (as there are no developed facilities here), but we recommend hiring an outfitter and enjoying their boats, PFDs and expertise…