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Image of the Day: April 2013

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Ghost Moon Setting

Credit: U.S. Department of the Interior
The moon sets over Chief Mountain on the eastern border of Glacier National Park, Mont. The mountain rises abruptly from the surrounding plains, earning…Read More »





it the name "Tower Mountain" from the Lewis and Clark Expedition. It was later renamed to honor the original Blackfoot monikor, "Great Chief."

Chief Mountain is a geological feature called a klippe. It was once part of a larger slab of tock thrust over this area of the Montana-Canada border by a fault. The rest of the slab gradually eroded away, leaving this 9,080-foot (2,768 m) tall holdout standing in isolation.    Less «
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