The Great Serpent Mound

The largest serpent effigy in the world uncoils along a ridge in southern Ohio, a quarter-mile of earthen snake with its jaws open around an oval, built by Native people on the rim of a very ancient meteorite crater (the strange broken geology may be why they chose the spot). Its coils align with the sun at the solstices. Who built it and exactly when is still debated. It is a real, awe-inspiring place you can walk beside, and a candidate for World Heritage listing. PUBLIC, Adams County, Ohio.