(This picture can be enlarged by clicking on it.)
The Niagara River below the falls rushes through a fairly narrow gorge at fantastic speeds. Then, about three miles below the falls, the river makes a 90-degree turn, which results in a fascinating whirlpool. The picture above was taken from the top of the gorge. The whirlpool can be seen to the left of center in the picture. The boat in the picture is pointing toward the top of the whirlpool.
