Vietnam's Son Doong: A rare journey inside the world's largest cave passage

This week's 60 Minutes takes viewers deep into the largest known cave passage in the world. The journey was one of the most physically demanding and visually stunning assignments of Scott Pelley's long career. "60 Minutes" is the most successful television broadcast in history. Offering hard-hitting investigative reports, interviews, feature segments and profiles of people in the news, the broadcast began in 1968 and is still a hit, over 50 seasons later, regularly making Nielsen's Top 10. Subscribe to the ...