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People prepare for the Kupala Night in Warsaw, Poland, on June 23, 2018. The pagan summer ritual celebrates love and fertility around the summer solstice. (Xinhua/Jaap Arriens)
People prepare for the Kupala Night in Warsaw, Poland, on June 23, 2018. The pagan summer ritual celebrates love and fertility around the summer solstice. (Xinhua/Jaap Arriens)