http://10.30.11.21:8080/cmssearch/topic?query=NatGeo&index=cms-english.vov.vn&size=20&from=0&mode=2&sortBy=DistributionDate<e=1576075532 natgeo | Trang 1 | VOV - VOV Online Newspaper

Tags: natgeo

Unknown caves in central Vietnam

Unknown caves in central Vietnam

Explorers from National Geographic Magazine discovered previously unknown caves while recording 360-degree images of Son Doong, the world’s largest cave, located in central Vietnam, in January.