Some things are better left where they’re found. That’s what the U.S. Army Corps of Engineers decided after uncovering a nearly century-old shipwreck at Barnegat Inlet along the Jersey shore.

In the summer of 2014 the corps began repairs at Barnegat Inlet North Jetty, which was damaged during Hurricane Sandy.

But the project, which cost in excess of $7 million, was stopped this summer after contractors began unearthing pieces of wood and metal that turned out to be the remnants of a long, lost shipwreck, the identity of which still baffles experts.

“Once we realized what we found wasn’t pieces of debris from the project we brought in a cultural expert,” Tim Boyle, a spokesman for the U.S. Army Corps of Engineers, Philadelphia District, told the Asbury Park Press.