Knut Thielemann, 22, was last seen on August 4, 1995, walking near Athabasca Falls in Jasper National Park, Alberta. He was described as a Caucasian male, 6 feet tall, about 154 pounds, with brown hair and blue eyes. At the time he wore a green shirt, camouflage army shorts, white athletic shoes and a wristwatch with a metal band.

Jasper RCMP carried out extensive air and ground searches of the rugged terrain around the falls and the wider park, but no sign of Thielemann was ever found. There have been no communications from him since that day and no confirmed clues to explain his disappearance.

Anyone who was in the Jasper area around August 4, 1995, or who may have seen Knut near Athabasca Falls that day is asked to come forward with information.