The sighting happened when Mark Holley, a professor of underwater archaeology at Northwestern Michigan University College and his colleague Brian Abbott voyaged across the lake in a ship furnished with sonar equipment with intent to examine old shipwrecks.
While combing Grand Traverse Bay they observed unique rock formations resembling Stonehenge, and rocks with strange engravings, one which Holley believes to be a Mastodon.
“When you see it in the water, you’re tempted to say this is absolutely real,” Holley told reporters.
Experts shown pictures of the boulder holding the mastodon markings have asked for more evidence before confirming the markings are an ancient petroglyph, said Holley.
“They want to actually see it,” he said.
Ancient structures underneath large masses of water are not all that uncommon around the planet. There are over 100 cities at the bottom of the Mediterranean Sea and even more at the bottom our oceans.
Which raises the question I always ask, “Where did all the water come from?”.