The Canadian shield.
The Canadian shield was the area of Canada that had most of its surface scrapped up by ice age glaciers. It covers half of Canada and the glaciers that scrapped the shield also made the huge holes, that are also known as the great lakes.
The Canadian shield was the area of Canada that had most of its surface scrapped up by ice age glaciers. It covers half of Canada and the glaciers that scrapped the shield also made the huge holes, that are also known as the great lakes.
