Massive icebergs float by in the Jökulsárlón Glacier Lagoon, shrouded in the fog as they make their way to the Atlantic Ocean. Icebergs in this lagoon, located in southeast Iceland, have broken off of the nearby Breiðamerkurjökull and Vatnajökull Glaciers, and are unique not only in their varying shades of blue, but also from the black streaks of volcanic ash, locked in the ice from eruptions that happened centuries ago.