Photographer spends years documenting Chinese grotto art
Updated: 2023-04-18 09:17( chinadaily.com.cn )
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Tiantishan Grottoes in Wuwei county, Gansu province, on Oct 5, 2012. It is one of the earliest excavated caves in China and a representative of early grotto art. [Photo by Ren Shichen/cpanet.org.cn]