Jökulsárlón is a large glacial lagoon (and the deepest lake in Iceland) located at the foot of the Vatnajökull glacier. As the glacier reaches the lowland areas, it retreats and melts, creating a lagoon. The lagoon is filled with giant icebergs that float slowly towards the ocean from the glacier. The icebergs are pretty varied in size and shape. The biggest ones can be as large as 20 to 30 meters. As the glacier "calves" and new icebergs enter the lagoon, it changes its appearance all the time.
The black sand beach where the icebergs are washed ashore by the waves is called the Diamond beach. Together these two attractions are probably the most photographed natural attractions in Iceland. Jökulsarlon has deserved the nickname "the Crown Jewel of Iceland."
Jokulsarlon glacier lagoon and Diamond beach have become world-famous as they have appeared in Hollywood movies such as James Bond, Batman Begins, and Tomb Raider.