Bizarre Mysteries That Remain Unsolved to This Day

Dancing Plague of 1518

In July 1518, a woman began suddenly dancing on the streets. Within a month, 400 others had joined her—and nobody could stop. Many died from exhaustion. It is thought that the phenomenon was caused by mass hysteria, or an act to please divine powers, but no definite conclusions have ever been reached.

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Post originally appeared on Upbeat News.