Completed in 1974, Alaska's Dalton Highway is the northernmost road in America. At 414 miles, the predominantly dirt road follows the upper half of the Trans-Alaska Pipeline, and is maintained exclusively as the transportation route for the oil fields at Prudhoe Bay. Alaskan photographer Ben Huff followed the road north for the first time in 2007, in search of the Alaskan frontier. He found a complex landscapethe physical and psychological line between wilderness and oil. For five years he traveled the road, and created a melancholy portrait of a space that asks us to reconsider our perception of frontier.