The
Rocky Mountain Trench, also known as
The Valley of a Thousand Peaks or simply the
Trench, is a large valley in the northern part of the
Rocky Mountains. It is both visually and cartographically a striking physiographic feature extending approximately from
Flathead Lake,
Montana, to the
Liard River, just south of the
British Columbia-
Yukon border near
Watson Lake, Yukon. The trench bottom is 3-to-16 km (2–10 miles) wide and ranges from 600–to-900 metres (2,000–3,000 feet) above sea level. The general orientation of the Trench is an almost uniform 150/330 degree geographic north vector which has also become convenient for north/south aviators.