The reason we still have glaciers today is that, it had no chance to melt away since the Ice Age. Most of the glaciers that we see today have been formed in recent times. These glaciers are usually the valley type of glacier. It starts in a broad, steep-walled valley shaped like a great amphi­theatre. Snow is blown into this area or slides in from avalanches from the slopes above. Eventually, the increasing pressure from above, together with some melting and refreezing, forces the air out of the lower part of the mass and changes it into solid ice. It begins to creep slowly down the valley. This moving tongue of ice is the glacier.