Tunel Online

Jung-woo Ha - Lee Jung-Soo, Bae Doona - Se-Hyun, Dal-su Oh - Dae-Kyung, Shin Jeong-geun - Captain Kang, Nam Ji-Hyun - Mi-Na, Hyun-Chul Cho - Young guy in rescue team, Kim Hae-sook - Minister (as Hae-suk Kim) , Seung-mok Yoo - Reporter Jo, Hyuk-kwon Park - Government official, Park Jin-Woo - Government aide, Cheol-min Lee - Captain of drilling team, Sung-chun Han - Drone technician, Seung-hun Kim - Public hearing moderator (as Seung-hoon Kim) , Soo-jung Ye - Old mother, Yong-wook Jin - construction worker A (as Jin Yong-Ok)