As the name indicates, Jökulsárlón Glacial Lagoon is a lagoon filled with enormous ice blocks, broken off from Breiđamerkurjökull Glacier, floating and tumbling toward the sea 1.5 kilometres away. The lagoon covers about 18 square km and is the deepest lake in the country, close to 290 meters deep. Jökulsárlón is currently growing larger due to the melting of the glacier, caused by the global climate changes and warming. It flows through a narrow channel into the Atlanic Ocean, leaving chunks of glacier ice on the black sand beach. There is a bridge across it´s outlet, close to the black beach which is sometimes referred to as the Diamond Beach, due to large and small pieces of ice that are often found stranded and scattered around it and look like beautiful diamonds. Jökulsárlón´s source, Breiđamerkurjökull Glacier is an outlet glacial tongue, extending to the south from the largest icefield in Europe, Vatnajökull and is a major attraction for tourists. During summer, exciting boat tours are available, Zodiac tours as well as amphibian boat trips, where you sail amongst the white and blue icebergs and where you might even spot some seals. There is another glacial lagoon nearby, called Fjallslón. It is smaller but still spectacular and there is a marked hiking trail between the two. Like many other sites in Iceland, the lagoon can be seen from the main highway so you won't miss it. . Jökulsárlón has been designated a part of Vatnajökull National Park, the largest National Park in the country. The lagoon is located immediately by the side of the main highway number 1, the so called ring road and is about 5 hours drive from Reykjavík. The lagoon has been popular setting for Hollywood movie producers; Die Another Day, Tomb Raider, and Batman Begins, - all have scenes that were shot in the area.