This little piece of land in the Gulf of Mexico has now vanished without a trace. Theories of what happened to the island range from it being subject to ocean floor shifts or rising water levels to it being destroyed by the US to gain oil rights.
It also may have never existed.
In 1828, a 16-year-old boy named Kaspar Hauser mysteriously appeared in Germany claiming to have been raised his entire life in a dark cell. Five years later, he was murdered just as mysteriously, and his identity remains unknown.
This unusual tribe was believed to have been extraterrestrial because they had strange blue eyes, almond-shaped with double lids; they spoke an unknown language, and their DNA did not match any other known tribe.