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A member of a team tasked with creating a 3D map of Alcatraz Island told his colleagues that he had an unsettling ghostly experience during their stay at the site's infamous prison. The eerie incident reportedly occurred as researchers were meticulously documenting the location as part of a project aimed at studying the erosion of the island. As part of the endeavor, the group spent three weeks on Alcatraz Island and, at night, actually slept in the prison.
More on this story at the Coast to Coast AM website.