Home / Series / National Geographic Documentaries / Aired Order / Season 2015 / Episode 57

The Search For China's Blue Hole

A group of underwater cave enthusiasts and mountaineering organizations explore the Leye pre-history Karst in the Guangxi Zhang Autonomous Region.

English suomi
  • Originally Aired September 24, 2015
  • Runtime 45 minutes
  • Content Rating United States of America TV-PG
  • Network National Geographic
  • On Other Sites Official Website
  • Notes Is a season finale
  • Created January 29, 2017 by
    Administrator admin
  • Modified February 4, 2024 by
    maxtherabbit