Describe the land where Alex disappears?

McCandless follows a trail called the Stampede Trail, which was blazed in the 1930s by a legendary Alaska miner. In 1961, Yukon Construction started to upgrade the trail, but gave up in 1963, leaving a bus outfitted to house workers along the trail as a shelter for hunters and trappers (although it is rarely used). In early September 1992, three moose hunters, Ken Thompson, Gordon Samel and Ferdie Swanson, go out to the bus, where they find a couple from Anchorage standing about fifty feet away, looking disturbed.