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What is this mysterious symbol? What did it mean? Why did it suddenly arise across civilizations in the late 1900s, then just as mysteriously vanish? Find out on: Lost Mysteries of The Schoolyard on the History Channel.
What is this mysterious symbol? What did it mean? Why did it suddenly arise across civilizations in the late 1900s, then just as mysteriously vanish? Find out on: Lost Mysteries of The Schoolyard on the History Channel.
The Lemmino documentary about it is actually kind of cool snd interesting.