![]() This section is dominated by north-south trending ranges separated by narrow valleys, including the Rocky Mountain trench, an especially deep and long valley that extends north from Flathead Lake. The Northern Rockies in northeastern Washington, Idaho, and western Wyoming extend from Yellowstone National Park to the Canadian border. Garnet Peak in the Wind River Range (13,785 feet 4,202 m) and Grand Teton in the Teton Range (13,766 feet 4,196 m) are the highest peaks in the Central Rockies. Most are eroded down to their Precambrian cores, surrounded by Paleo-zoic-Mesozoic sedimentary rocks. The Central Rockies in northeastern utah and western Wyoming are lower and more discontinuous than the southern Rockies. ![]() The southern Rockies are the highest section of the whole range, including many peaks more than 14,000 feet (4,250 m) high. Three basins are located between these ranges, known as the North, South, and Middle Parks. In New Mexico, Colorado, and southern Wyoming the Southern Rockies consist of two north-south ranges of folded mountains that have been eroded to expose Precambrian cores with overlying sequences of layered sedimentary rocks. The mountains were a major obstacle to traveling west during the expansion of the united States, but western regions opened up when the oregon trail crossed the ranges through South Pass in Wyoming. Several national parks are located in the system, including Rocky Mountain, Yellowstone, Grand Teton, and Glacier National Parks in the united States, and Banff, Glacier, Yoho, Kootenay, and Mount Revelstoke in Canada. The Rocky Mountains are divided into the Southern, Central, and Northern Rockies in the conterminous United States, Canadian Rockies in Canada, and the Brooks Range in Alaska. The continental divide is located along the rim of the Rockies, separating waters that flow to the Pacific and to the Atlantic Oceans. Mount Elbert in Colorado is the highest mountain in the range, reaching 14,431 feet (4,399 m). The mountains are situated between the Great Plains on the east and a series of plateaus and broad basins on the west. Extending 3,000 miles (4,800 km) from central New Mexico to northwest Alaska in the easternmostĬordillera, the Rocky Mountains are one of the largest mountain belts in North America.
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