Cool Facts About Glaciers

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9And have been on earth for millions of years

One of the most impressive facts about glaciers is their age. The mosaic pictured here was discovered in the ancient Roman city of Volubilis near Meknes, Morocco.

The Antarctic Ice Sheet is estimated by scientists to be at least 30 million years old, while the Greenland Ice Sheet is a relative newcomer at only 2.5 million years old.