WHAT HAPPENED TO SON DOONG CAVE IN MAY 2015

28. What happened to Son Doong Cave in May 2015? A. It was discovered by a local man named Ho Khanh. B. A live programme featuring its magnificence was broadcast on ‘Good Morning America’ by the American Broadcasting Company (ABC). C. It became known internationally thanks to British cavers, led by Howard Limbert. D. It was explored by the first tourist group.