Located at the head of the Castle River; north of Bauerman Creek. Waterton Park, Alberta Major headwater Oldman River.
Latitude 49; 19; 25 Longitude 114; 06; 50, Topo map 82G/01

Panorama viewpoint: Sofa Mountain Hill. Can be seen from Red Rock Canyon Road

Naming: The ridge was thought to be shaped like an airplane (avion is the French word for airplane). Official name.