Just returned from a backpacking trip in Wrangell-St. Elias National Park...by far one of the most awesome places in the world....next to the Brooks Range. This unique bridge of sorts is actually formed from a glacier. A friend and I were hiking up the aptly named, Glacier Creek towards the Twaharpies Glacier. At the toe of the glacier is a moraine several miles in length. A moraine is formed by moving/melting glaciers which deposit rock and debris as the ice retreats, melts, or otherwise moves. Underneath this debris is melting ice. In the lower right hand corner of the bridge, where the water is exiting the tunnel...notice the strip of white. That is ice. Pretty interesting. Even more intriguing is that this landscape is constantly changing. A couple years, that bridge may no longer exist.
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