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The Dempster Highway On the North Slope of the Richardson Mountains, Northwest Territories, Canada |
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The Dempster Highway descends over 2300 feet from Wright Pass down the north slope of the Richardson Mountains to the Peel River. The landscape here is a gallery of Arctic landscape features. Stone stripes boldly pattern many of the steeper slopes. The green tundra is wrinkled into solifluction lobes where repeated freezing and thawing has caused the surface to slowly migrate downhill. Many flat areas have frost polygons and other forms of patterned ground. There is a long narrow ridge of gravel (seen in this panorama) that snakes across the mountainside in a most illogical way. It may be an esker the gravel bed of a river that flowed over or through an ice mass, and was eventually lowered down to the ground when the ice melted. Next: Tundra |