We are in Pinery Provincial Park near Grand Bend, Canada which is on the East coast of Great Lake Huron. In the middle of the park there is a river that splits the park in half called the Old Ausable Channel. There is a park road that circumnavigates the entire park and river going along the Lake coastline and over the river in several places. I think it was about 7 miles long. We took our bikes around and pedaled the entire loop to see all the sights. Here is the river or channel as you cross it at one point.