Geological values of lava caves in Krongno Volcano Geopark, Dak Nong, Vietnam
Authors: Phuc La The , Tachihara Hiroshi , Honda Tsutomu , Tuat Luong Thi , Thom Bui Van , Hoang Nguyen , Chikano Yuriko , Yoshida Katsuji , Tung Nguyen Thanh , Danh Pham Ngoc , Hung Nguyen Ba , Duc Tran Minh , Vu Pham Gia Minh , Hoa Nguyen Thi Mai , Bien Hoang Thi , Quy Truong Quang , Minh Nguyen Trung 
Published: October 2018

The paper presents the initial results of the study of volcanic cave system and its typical formations in Krongno Volcano Geopark (KVG), Dak Nong, Vietnam. The volcanic caves have been discovered since 2007, under UNESCO sponsored the scientific project, are seen as unique geological heritages. The collaborative surveys and studies between Vietnamese geologists and the members of the Non-Profit Organization, Vulcanospeleological Society of Japan have discovered and surveyed 45 caves, and detailed mapping 20 caves. Using a complex of adequate methods, especially Remote Sensing image interpretation method, Surveying and mapping lava cave method, K/Ar dating isotopic analytical method and Current methodology, the studies aim to affirm endogenous origin of the lava cave system, the formation mechanism, as well as the typical formations of the caves. 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