Glaciers
Glaciers are moving rivers of ice often with streams inside them. They have to be about 50 foot deep before they start to move. They carry huge rocks down with them from the mountains.

Fresh falling snow is made up of microscopic ice crystals and has a very delicate structure, nothing like the solid ice found in glaciers, but after it lands the snow piles up over the years and goes through a series of alterations to become hard ice. It can take from 50years on an ideal site to 3,000 years for a glacier to form.

When the temperature rises and makes them melt they make streams and leave rocks where they were carried as the water drains away. There are no glaciers in England or Scotland now because our climate became to warm. Strathnairn was once covered by a glacier taller than the school and we play on the rocks left behind on the moor as children in the past have done. We have spoken to former pupils who enjoyed games like ours.