The amazing thing about wrecks in Lake Superior is that they are incredibly well preserved and free of corrosion. The lake is fresh water, and is only a few de

The amazing thing about wrecks in Lake Superior is that they are incredibly well preserved and free of corrosion. The lake is fresh water, and is only a few degrees above freezing in most places all year long. Corrosion moves very slowly. Full dry-suit diving, though, if you go to see them yourself.