The Lost Colony
The island of Roanoke had a small colony built upon it when it was first discovered. When the leaders of the expedition went back to the motherland (england) in order to get supplies, they returned to find the colony had left behind an entire village. They left behind no clues as to where they were, only the word "croatoan" carved into a fence surrounding the main village. Years later, nearby, the word "cro" was found carved into a tree.