Tourists visit Yaolin karst cave in Tonglu County, China's Zhejiang
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Tourists visit the Yaolin karst cave in Tonglu County, east China's Zhejiang Province, Aug. 25, 2019. (Photos: Xinhua/Huang Zongzhi)
Tourists visit the Yaolin karst cave in Tonglu County, east China's Zhejiang Province, Aug. 25, 2019.
Tourists visit the Yaolin karst cave in Tonglu County, east China's Zhejiang Province, Aug. 25, 2019.
Tourists visit the Yaolin karst cave in Tonglu County, east China's Zhejiang Province, Aug. 25, 2019.
Tourists visit the Yaolin karst cave in Tonglu County, east China's Zhejiang Province, Aug. 25, 2019.
Tourists visit the Yaolin karst cave in Tonglu County, east China's Zhejiang Province, Aug. 25, 2019.