Built in the 1930s, most of this former mining route lies in to Denali National Park and Preserve. Today the trail is a rugged track used primarily by snowmobilers, mushers and skiers in late winter, when travel is easier. But the wilderness trail does draw a number of summer visitors who want to view the Fairbanks City bus where Chris McCandless, the subject of John Krakauer's 1997 bestseller Into The Wild, lived and died.