SOUTH HAVEN, MI -- Lake Michigan’s beaches are filled with colorful rocks, beach glass and intricate fossils from different eras of the lake’s 1.2 billion year history. Because of that ...

according to Michigan State University. The copper ore-rich rocks lived in rock layers deep in Lake Superior. By 1860, three major copper-producing regions had been developed in the Upper ...

In Michigan and Minnesota, these agates can be found along the shores of Lake Superior. This unique rock is a conglomerate that metamorphosed into quartzite, and got its name because it looked ...

Lake Michigan is famed for being an underwater wonderland, boasting 240 shipwrecks. Some wrecks are even visible with snorkeling gear. Another popular activity is cliff jumping, with rock ...