Experts have used a “space treasure map” to make a remarkable discovery in the Caribbean -- a centuries-old anchor believed to be from one of Christopher Columbus’ ships.

Analysis of the anchor, which was found off the Turks and Caicos islands, reveals that it dates to between 1492 and 1550. The overall size of the anchor and its estimated weight of between 1,200 and 1,500 pounds indicates that it was a “bower” anchor from a 300-ton vessel, the typical size of a Columbus-era ship.