Extreme China
Hanzhong Underground
Season 1 Episode 3 of 3
Ben Horton explores one of the world's biggest sinkholes in Hanzhong, rappelling 180 metres down into a massive and barely explored underground cave system
Extreme China airs on National Geographic Channel +1 at 7:00 PM, Friday 7 March.
Topics
Education ➝ Science ➝ Factual Topics
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