A Crack in the Mountain - Vietnam Foreign Correspondent : Season 33 Episode 6
ABC 30m int(0)
Aired: April 4th, 2024 @ 8:00 PM EST on ABC
In the jungle of central Vietnam lies Son Doong, a magnificent underground cave passage, the largest in the world. Undisturbed for millions of years, its future has been placed in doubt with plans to make it a tourist mecca.