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Phong Nha Ke national park / Vietnam, 16/11/2017: Group of cavers passing an underground river and huge rocks inside the giant #136604576
Description
Phong Nha Ke national park / Vietnam, 16/11/2017: Group of cavers passing an underground river and huge rocks inside the giant Hang Tien cave in the Phong Nha Ke national park in Vietnam.