This 102-foot-long Roman barge from the first century A.D. was lifted in 2011 from the Rhône River in Arles, France. It was virtually intact after two millennia in the mud.
Finding modern ships lost at sea, even with the help of radar, sonar, and satellites, can be a herculean task. But trying to find a shipwreck from thousands of years ago is even harder. It's like looking for a wooden needle in a haystack after part of the needle has rotted away.
Underwater archaeologists keep looking, though, because finding one of these shipwrecks could yield a treasure trove of information—from how ancient peoples built their vessels to where they traveled and who their trading partners were.
Figuring out those connections would allow researchers to better understand ancient economies, and to put the cultures into a more global context, says James Delgado, director of maritime heritage for the U.S. National Oceanic and Atmospheric Administration (NOAA).
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