Our practice of walking around the Promenade deck was ideally suited to our day in Glacier Bay. All day we sailed slowly up the long, relatively narrow bay, and back out again. Periodically, the Park Rangers, who boarded for the purpose, pointed out significant sights and explained the geology or zoology displayed on all sides. The Lampblugh Glacier was my first experience with a blue glacier. In pictures, the turquoise looks like a photographic trick, but it is truly that beautiful, garish colour. Black dirt and rocks slash through the blue like a crazy, natural penchant for fashion. Further on, the Margerie Glacier favours pure white, with a few fine grey stripes. Deep inside, behind the gently curved ice towers at the ed
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