Glaciers are made of mostly ice and
snow. In areas where there are year-round snowfall, snow in a
certain area on land will accumulate. The snow will accumulate
to such a degree that the weight and the pressure of the snow
will push the
Glaciers are made up of layers of snow in the following order:
* New Snow: the newest layer of snow to have fallen on the glacier
* Old Snow: a layer of snow that is underneath the new layers of snow
* Firn: Special State of water from the layers of snow above
* Glacial Ice: The snow at the bottom that has turned to ice.
The photo is a cut away shot of a glacier.