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R E K

It is crazy to think of just how far glaciers used to extend in Southeast Alaska. There is a reason that the entrance to each glacier arm is bordered by a bar(a shallow rock and gravel bank). The bar marks the point of greatest advance of the glaciers during the last ice age.

The glaciers pushed gravel and boulders, then receded, leaving the bar behind.

3 comments
R E K

@kline I learned that term just a few days ago :), i kept seeing it mentioned in our guide books. I'd never heard the term before arriving here.

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