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Long-running tvN super fun videos! Save them and watch them later! #WatchLaterVideo #NattoDong #SonDungCave Heavenly cave? Extreme exploration! The first in Korean broadcasting! Unpredictable global 'real' exploration variety show digging into the unknown SonDung Cave tvN 〈Three Million Years Ago Wild Exploration: SonDung Cave〉 Every [Thursday] at 8:40 PM 〈SonDung Cave〉 Rewatch on TVING 👉 https://www.tving.com/contents/P00018... we're :DIGGLE family