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Photo taken on May 3, 2019 shows plants at the bottom of the Luoquanyan sinkhole, which measures 290 meters in depth, in Xuan'en County, central China's Hubei Province. (Xinhua/Song Wen)
Photo taken on May 3, 2019 shows plants at the bottom of the Luoquanyan sinkhole, which measures 290 meters in depth, in Xuan'en County, central China's Hubei Province. (Xinhua/Song Wen)