Most people run away at the sight of a snake, however the Great Serpent Mound in Adams County, Ohio is one of the world’s greatest mysteries and attracts approximately 20,000 individuals each year. The Great Serpent Mound is considered to be the largest effigy (three dimensional representation of person, animal, idea) mound in the world. The raised plot of land is 1,370 feet long and ranges from one to three feet tall. Researchers and scholars agree that the main structure is in the shape of a snake, however there is debate over the purpose of the oval at the end of the design. Some believe that the snake is approaching an egg, while others believe it is the body of a frog, and some just believe it is a round platform. It was originally thought that the Great Serpent Mound was constructed by the Adena culture, who flourished the lands from 1000 BC to 100 AD and were known for their magnificent effigies and earthworks. This theory was somewhat debunked in the 1990′s when radiocarbon dating on the mounds estimates the constructed date at 1070 AD. The enigma surrounding the Great Serpent Mound continues today. The southwestern Ohio plot of land was nominated and is considered “tentative” on the World Heritage List (which includes the Great Pyramids, Great Wall of China, Taj Mahal, etc…). For those of you into scanning “Google Maps” for bizarre land plots, the coordinates of the Great Serpent Mound are 39°2′N 83°24′W.