The glaciers in Glacier Bay are often shrouded in mist, if not completely occluded from view. When rain falls at sea level, snow falls at the upper elevations. The snow compresses into ice and eventually, that ice begins to flow to the sea. On this evening, Margerie Glacier was mostly covered beneath a blanket of fog. For a few minutes, the fog lifted and the glacier was revealed, only to be covered up again a few minutes later. Photographer: Sean Neilson