There are several tidewater glaciers and even more alpine glaciers in Glacier Bay. The tallest of these ranges, the Fairweather Range, features mountains that stretch as high as 15,320 feet taller than Mt. Rainier and Mt. Shasta! In fact, Mt. Fairweather is taller than any of the mountains in the other 49 states. Advancing glaciers flow forward about three to six feet each day. Depending on the length of the glacier and the steepness of the valley it flows through, the ice at the front of the glacier is anywhere between 75 and 200 years old. Snow that fell in the high mountains 200 years ago when the U.S. Declaration of Independence was signed, breaks off as ice today.
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Sig Nordal 