*Yasuhiko TAMURA¹, Yuichi S. Hayakawa², Masashi Morita³, Chiaki T. Oguchi⁴, Keisuke Ogata⁵, Takuro Ogura⁶ (1.The Executive Committee for the Preservation of TAYA CAVERN , 2.Faculty of Environmental Earth Science, Hokkaido University, 3.Faculty of Urban Innovation, Division of Urban Innovation, Yokohama National University, 4.Graduate School of Science and Engineering, Saitama University, 5.Department of Cultural Property, School of Literature, Tsurumi University, 6.Graduate School of Education, Hyogo University of Teacher Education)

*Yuichi S. Hayakawa¹, Sahoko aki² (1.Faculty of Environmental Earth Science, Hokkaido University, 2.Center for Spatial Information Science, The University of Tokyo)

*Yuichi S. Hayakawa¹, Koji Okumura², Ryoichi Kontani³, Yuji Yamaguchi⁴, Fikri Kulakoglu⁵ (1.Faculty of Environmental Earth Science, Hokkaido University, 2.Graduate School of Letters, Hiroshima University, 3.Faculty of Literature, Notre Dame Seishin University, 4.Research Institute for the Dynamics of Civilizations, Okayama University, 5.Faculty of Language, History and Geography, Ankara University)

*Yu Takagi¹, Takuro Ogura², Yasuhiko TAMURA³, Chiaki T. Oguchi⁴, Yuichi S. Hayakawa⁵, Masato Sato⁶, Tsuyoshi Hattanji⁷ (1.Graduate School of Science and Technology, Degree Programs in Life and Earth Sciences, University of Tsukuba, 2.Graduate School of Education, Hyogo University of Teacher Education, 3.The Executive Committee for the Preservation of TAYA CAVERN, 4.Graduate School of Science and Engineering, Saitama University, 5.Faculty of Environmental Earth Science, Hokkaido University, 6.National Research Institute for Earth Science and Disaster Resilience, 7.Faculty of Life and Environmental Sciences, University of Tsukuba)

*Tennyson Lap Wing Lo¹, Yuichi S. Hayakawa², Yasutaka Nakata³, Masato Hayamizu⁴, Takuro Ogura⁵ (1.Graduate School of Environmental Science, Hokkaido University, Japan, 2.Faculty of Environmental Earth Science, Hokkaido University, Japan, 3.Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Japan, 4.Forestry Research Institute, Hokkaido Research Organization, Bibai, Japan, 5.Graduate School of Education, Hyogo University of Teacher Education, Japan)

*Yuichi S. Hayakawa¹ (1.Faculty of Environmental Earth Science, Hokkaido University)

*Yasuhiko TAMURA¹, Chiaki T. Oguchi³, Yuichi S. Hayakawa², Takuro Ogura⁴ (1.The Executive Committee for the Preservation of TAYA CAVERN , 2.Faculty of Environmental Earth Science, Hokkaido University, 3.Graduate School of Science and Engineering, Saitama University, 4.Graduate School of Education, Hyogo University of Teacher Education)