An iceberg is a block of ice floating on the surface of the ocean, seas, and even lakes. This glacier, which can range in size from a few centimeters to several thousand kilometers long, has broken away from the mainland in the polar regions, splits and drifts over vast expanses of water as the sea currents and winds flow. An iceberg is caused by the accumulation and settlement of snow on the mountains and glaciers in the pack ice over thousands of years. Most icebergs are made up of fresh water that takes a long time to thaw, which is why they melt very slowly and last quite a long time. The iceberg always occurs as a visible area above the water, the emerged surface represents only 10% of the block and it is the submerged area that represents 90% that is the most dangerous, given its quite different shapes. A cautionary saying : only the tip of the iceberg is known.
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