A Wisconsin man, was skiing with friends in Grand Teton National Park on Saturday morning when he lost control and plummetteddown the south side of the Middle Teton.

Mr Redmond was wearing a climbing helmet and his ski pole was equipped with an ice axe designed to break falls but "he was unable to self-arrest on the firm snow," a park spokeswoman said in a statement.

Another skier used a mobile to request help from park rangers, who provided emergency medical treatment at the scene.

Mr Redmond was taken off the mountainside in a harness suspended by 200ft of rope from a slow-moving helicopter, which was unable to land in the rugged terrain.

A park medical director treated the skier before he was airlifted to Eastern Idaho Regional Medical Center in Idaho Falls.

If you are planning a snow bound adventure this winter please be sure to posses all the correct safety equipment, Chilloo promote the use of helmets while skiing or snowboarding as they may save your life. for more information vist www.chilloo.co.uk