Emergency staff worked through the night to pull people from beneath twisted metal and other debris and rush the injured on stretchers to waiting ambulances. Snow, sleet and icy roads hampered rescue operations.
The collapse happened last night. About 560 students from Busan University of Foreign Studies had gathered for a two-day freshman orientation at the Manua Ocean Resort in the southeastern city of Gyeongju when a crack appeared in the auditorium ceiling before the collapse.
Ten people died, two people were seriously injured and 103 lightly injured, said Jung Yoon-han, director of the disaster management department at the Ministry of Security and Public Administration.
The students had just finished dinner and were gathering for recreational activities at the time of the collapse, Byun Ki-chan, head of the international exchange department at the university, told reporters Tuesday.
Some managed to escape after noticing a crack in the roof but others couldn't leave in time, he said.