The biggest break in this centuries-long search came in 1991, with the discovery of Thomas Hariot's science center. This discovery provided the first tangible link to the colonists on the island. It also firmly established that the modern fort reconstruction was not the site of the original colony. The visible ruins are now thought to date to a period long after the colonists' disappearance. Speculation of the colony's whereabouts had always been strategically linked with the fort's layout, and now archaeologists were free to look at the site with fresh eyes. Most still presume the settlement lies somewhere within the Fort Raleigh National Historic Site, buried under the forested sand dunes. Some speculate that the colony may be underwater or washing out to sea from an eroding beach. Others suspect it could be located on an entirely different part of Roanoke Island.
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