• @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.

    • @Carvex
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      66 months ago

      Shhh don’t tell anyone.