The Children of Woolpit is an ancient account dating back to the 12th century, which tells of two children that appeared on the edge of a field in the village of Woolpit in England. The young girl and boy had green-hued skin and spoke an unknown language. The children became sick and the boy died, but the girl recovered and over the years came to learn English. She later relayed the story of their origins, saying they came from a place called St Martin’s Land, which existed in an atmosphere of permanent twilight, and where the people lived underground. While some view the story as a folk tale that that describes an imaginary encounter with inhabitants of another world beneath our feet or even extraterrestrial, others accept it as a real, but somewhat altered account of a historical event that merits further investigation.