In 1972, the British Headless Valley Expedition, led by Sir Ranulph Fiennes, completed the first inland north to south crossing of Canada by water. Beforehand, the team also travelled in small rubber boats against the rapid current of the South Nahanni River to the Virgina Falls (about twice the height of Niagara Falls) in the Northwest Territories of Canada. THE OBSERVER helped to sponsor the expedition and assigned me to cover it in words and pictures for its colour magazine.