An apparent shipwreck found beneath Ground Zero. The story was fascinating enough from the start — and now we know just how old it might be.
Archeologists say the remnants found four years ago are more than 200 years old.
In 2010, construction workers excavating a lot for a parking garage near the former World Trade Center site discovered the 32-foot long piece of a ship about 20 feet below street level.
And now we know some pretty interesting details.
Scientists from Columbia University studied the tree rings from the oak used in the ship to determine its origins.
They say the wood matches the same wood from a forest in Philadelphia dating back to about 1773, right before the Revolutionary War.
They also suggest it's the same type of wood used to build Independence Hall.
Researchers still don't know for sure why the ship sank — whether it was by accident or deliberately used for landfill to expand the island of Manhattan as we know it today.
Two researchers tell The New York Times they think it was probably the latter — pointing out sawed-off beams that could indicate it was purposely sunk.
Find out what scientists know for sure about the ship and where it has been, based on discovered artifacts, in this Newsy video.