More from Headlines Off-limits to humans for 70 years, S. Korea's border zone becomes sanctuary for rare cranes Every winter, thousands of endangered cranes visit Cheorwon-gun near inter-Korean border Rubio affirms confidence in S. Korea's acting President Choi, strength of alliance: State Dept. x Korea’s restaurant closures hit 19-year high as industry struggles with rising costs x Chinese Embassy expresses 'regret' over suspected Yoon supporter's trespassing attempt x