Rocky Mountains

ROCKY MOUNTAINS, the largest mountain range in N America, runs almost the entire length of BC, about 1,200 km from the US border to just shy of the Yukon border. The Rockies were formed about 120 million years ago when what was then the western edge of N America collided with other land masses, compressing the rock and causing it to fold, fracture and pile up (see CORDILLERA). From the US border to the vicinity of Kakwa Pass (well north of Jasper) they form the boundary between BC and Alberta....

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