Kazakhstan, Mangystrau Peninsula. A fairly well-known landmark known as the Valley of the Stone Balls. Huge territory, away from the roads, in the steppes. It is not known exactly how these balls appeared, but according to one version, softer rocks are blown out from constant winds, while hard ones remain. But in this case, the question arises - how did these balls end up in the steppe, far from the mountains ... There are theories about aliens and ancient peoples, but they seem too fantastic to me
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To be continued