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On the sign:
HARBOR WAY DIG Icon of a shovel 2016 Construction crews excavating the foundation for 121 Seaport Boulevard discovered a 19th-century ship buried deep in the former tidal flats.
The sign was placed by the City of Boston Archeology Program body aimed at preserving the archeological finds found in Boston following excavations, or otherwise.
The sign documents the remains of a shipwreck found in excavations made during construction work on Seaport Avenue.