Geology and Terrain

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Geology and Terrain

The most prominent geological feature of the park is the Alaska Range, a 600-mile-long crescent of mountains that separates South Central Alaska from the Interior. Mt. Hunter (14,573 feet), Mt. Foraker (17,400 feet), and Mt. McKinley (20,320 feet) are the mammoths of the group. Glaciers flow from the entire Alaska Range.

Another, smaller group of mountains—the Outer Range, north of Denali's park road—is a mix of volcanics and heavily metamorphosed sediments. Though not as breathtaking as the Alaska Range, the Outer Range is popular with hikers and backpackers because its summits and ridges are not as technically difficult to reach.

Several of Denali's most spectacular landforms are deep in the park, but are still visible from the park road. The multicolor volcanic rocks at Cathedral Mountain and Polychrome Pass reflect the vivid hues of the American Southwest. The braided channels of glacially fed streams such as the Teklanika, Toklat, and McKinley rivers serve as highway routes for both animals and hikers. The debris- and tundra-covered ice of the Muldrow Glacier, one of the largest glaciers to flow out of Denali National Park's high mountains, is visible from Eielson Visitor Center, at Mile 66 of the park road. Wonder Lake, a dark and narrow kettle pond that's a remnant from Alaska's ice ages, lies at Mile 85, just a few miles from the former gold-boom camp of Kantishna.

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