The word iceberg comes from the Dutch word 'ijsberg' meaning 'Ice Mountain'. These are mountainous objects, the counterpart of our mountains on land, and like them, they have their own mysterious and serene beauty. But unlike our mountains, icebergs can shift and move, change shape, and even disappear.
In general, icebergs form that large pieces of a glacier or ice shelf break off; the glaciers calve. Icebergs consist of fresh water with air pockets. They can also form from piling up pack ice and ice floes. Because of the lower density compared to the surrounding water, only about a seventh of an iceberg protrudes above the water surface.