Glaciers form from delicate, falling snow. If enough of these flakes last through the summer, they will create a mighty glacier.Glaciers form where the summer is cold enough for not all the snow to melt. That means that they form in the high latitudes (Arctic and Antarctic) and in high mountain areas – the coldest, most remote places on Earth. Glaciers flow by a mixture of internal deformation of ice, and from the ice sliding on the bed. The weight of the ice forces it to deform. Gravity pulls the ice downslope. If the ice surface is steep, the pull is strong, and the glacier flows faster. Ice deforms by ice crystals sliding over each other.
