• @gedaliyah
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    6 months ago

    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.

    • @CosmoNova
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      46 months ago

      The Lemmino documentary about it is actually kind of cool snd interesting.