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Here is beautiful photo of the Son Doong Cave in Vietnam the world's largest subterranean area of it's kind. If you look closely you should be able to see the person standing in the middle of the photo. The Son Doong Cave was discovered in 1991 and became open to the public in 2009.
See also:
Ta Prohm Temple in Angkor Cambodia
Fisherman in Yingxi China Photo
Hoàng Khai Nhan Chinese Fisherman Photo