
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
Niagara Rainbow |
 |
 |
 |
 |
 |
 |
 |
 |
The Story of the Falls began 600 million years ago. The future site of the Great Lakes stood at the centre of a broad, shallow sea that covered much of North America. Beneath these waters were the already ancient Pre-Cambrian rocks of the Canadian Shield-the bowl- shaped basement of our continent. |
 |
|