Two Piles of Blacksmithing Waste Complicated the Lost Colony Mystery

The newest clue in the Lost Colony mystery is not a grave, a letter or a confession. It is two piles of iron trash.

Hammerscale, the flaky iron-oxide debris that breaks off hot metal as a blacksmith hammers it, turned up on Hatteras Island, North Carolina, in a layer researchers date to the late 16th century. The island was historically called Croatoan, home to the Indigenous community of the same name. In 1590, when English governor John White returned to Roanoke, his roughly 120 colonists were gone. They had left "CRO" carved into a tree and "CROATOAN" carved into a post, with no sign of the cross they had agreed to leave if they were in trouble. What happened after that has been an open question for 436 years.

Archaeologist Mark Horton, working with the Croatoan Archaeological Society, found the flakes in a pit beneath a thick shell midden that held almost no European material. He argues that hammerscale is waste, not a trade good, and that the island's Indigenous residents are not known to have forged iron. If he is right, someone was working iron on that spot.

Not everyone is persuaded. Charles Ewen, an archaeologist at East Carolina University, told Live Science he wants to see a hearth before he accepts a forging interpretation, and noted that the hammerscale could reflect Indigenous reuse of European metal, or activity by other 16th-century visitors passing up the Gulf Stream. The research, as reported in 2025, had not yet appeared in a peer-reviewed journal.

The next answer to Roanoke may not look like treasure. It may look like rust.

Read the full story at Live Science, June 10, 2025

Hot Take: Everyone wants Roanoke to end with a grave, a map or a confession. Archaeology keeps handing us flakes of rust and telling us to be patient.