My son Brad is in position to photograph dawn's early light on Isle Royale. We are on the 45-mile-long main island of the Isle Royale archipelago. Another action-packed day of exploring and photographing Michigan's only National Park lies ahead of us. The large waves we encountered a day ago on our ship voyage from Houghton to Isle Royale have now disappeared. Lake Superior, the largest freshwater lake in the world, has turned into a mirror overnight.