Michigan boasts an impressive amount of Great Lakes shoreline, but besides Lake Huron, Lake Michigan, and Lake Superior, there are rivers and lakes in every part of the state that invite exploring. In Lower Michigan, easier more accessible rivers traverse state and national forests, such as the Grand and Au Sable rivers. In the Upper Peninsula, Sylvania Wilderness preserves a rare tract of old growth forest amid 36 lakes that are connected by portages. Isle Royale National Park floats on the horizon, beckoning canoeists across Lake Superior. The rivers of the Upper Peninsula tend to be wilder than those in the south, with serious rapids and waterfalls suitable only for the experienced whitewater canoeist. Although Michigan does not have as many opportunities for extensive canoe trips, the lakes and rivers of Michigan offer a wide variety of shorter paddling trips.