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Earth's Giant Hole

Premiere

Sat 6 May 6pm - 7pm National Geographic Channel
See Repeats
Sat 6 May, 7pm - 8pm National Geographic Channel +1
Sun 7 May, 10am - 11am National Geographic Channel
Sun 7 May, 11am - 12pm National Geographic Channel +1
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Summary

Professor Darryl Granger explores China's tiankengs - giant natural holes, hundreds of metres deep, which have developed in unusual environmental conditions.

Cast & Crew

Presenter Darryl Granger

Documentary

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