Discovered Unusual stone formation in Lake Michigan:

The Archaeological discovered Stones in a circular formation along with in a possible ancient carvings have been deep below the surface of Lake Michigan Country(USA). According to BLDGBLOG, in 2007, Mark Holley is a professor of underwater archeology at Northwestern Michigan College,they have been discovered a series of stones arranged in a circle 40 feet below the surface of Lake Michigan. Only one stone outside in to the circle seems to have carvings that resemble a mastodon an elephant like animal that went extinct about 10,000 years ago.
Archaeologistshttp://www.greatarchaeology.com/archaeologist_view.php had been hired to survey the Lake of their floor near Traverse City, Michigan, an examine old boat wrecks with in a sonar device. They discovered sunken boats and cars and even a Civil War era pier. But among these expected finds was a potentially prehistoric archaeology surprise. “When you see it in the water, you are tempted to say this is absolutely real,” Holley told reporters at the time. “What we need the experts to come in and verify.”
Specialists involved in the case are skeptical and want to gather more info before making in to a judgement. They want to actually see it, said Holley. Experts in petroglyphs generally do not dive, so we are running into a bit of a stumbling block there. The formation, if authenticated, would not be completely out of place. Stone circles and other petroglyph sites are located in the area.