r/nonmurdermysteries

It was 1679

A ship called Le Griffon sailed out into Lake Michigan and had never been seen since.

Most people have never heard of Le Griffon — yet its disappearance is one of the greatest unsolved mysteries in North American history.

In 1679, French explorer René-Robert Cavelier de La Salle launched a ship unlike anything the Great Lakes had ever seen. Le Griffon was a 45-ton barque built above Niagara Falls, in wilderness so remote it might as well have been another planet. Indigenous nations watched in disbelief as La Salle’s crew dragged anchors, cannons, and rigging through dense forest and raging rapids to create the first large European sailing ship on the upper Great Lakes.

Think about the mindset required for that.

La Salle wasn’t just an explorer — he was the Elon Musk of the 17th century. Obsessive. Visionary. Recklessly ambitious. The kind of man who convinced investors to fund ideas most people thought were impossible. While others saw endless water and hostile wilderness, La Salle saw a commercial empire stretching across an entire continent. Le Griffon was his prototype Starship.

And then it vanished.

After loading its cargo of valuable furs near Green Bay, Le Griffon sailed east toward Niagara… and was never seen again. No confirmed wreckage. No survivors. No distress signal. Just silence across the cold inland seas.

For over 340 years, treasure hunters, historians, and divers have searched for the ship. Some believe it sank in a violent storm on Lake Michigan. Others think the crew mutinied. A few theories claim it was deliberately destroyed to sabotage La Salle’s ambitions.

The eerie part is this: the Great Lakes are so vast and deep that Le Griffon could still be sitting perfectly preserved in darkness somewhere beneath the water. Perhaps it has been found but this is unconfirmed.

An entire ship. Frozen in time since the 1600s.

Waiting to be found.