Atop Whistlers Mountain (2470m; 8104'), near Jasper, Alberta
Not to be confused with "Whistler Mountain" near Vancouver, BC.
Sunwapta Falls, Jasper National Park, Alberta
Athabasca Glacier (Columbia Icefield), Jasper National Park, Alberta
The glacier is the finger of ice in the middle right of the photo. In 1884, it extended all the way to the front of this photo. It's been retreating rapidly ever since.
On the Columbia Icefield