what did these people notice ?

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.

A powerful smell is coming from the bus, and there is a note taped to it written by Chris McCandless, saying that he is injured, weak, near death, and in need of assistance. The couple is too disturbed to look inside the bus, so Samel looks through the window, and sees a sleeping bag that might have something inside it. He goes around the other way, and sees a head protruding from it. McCandless has been dead for two weeks when they find him.