Jerry Dennis is a writer from Traverse City who has been writing about the Great Lakes region for decades now. His newest book is en extended meditation on the Lakes in winter time. It's called Windward Shore: A Winter on the Great Lakes, published by University of Michigan Press. At the front Dennis suggests the lakes might be the most poorly understood place in North America. So with the help of injured knee to slow him down, he devotes himself to understanding them better. He spoke with Peter Payette on Points North.