ZDF - Underworld Series 1 (2021) Part 5 China

Underworld Series 1

Embark on a journey deep into the unknown 95% of our planet, revealing extraordinary caves with 3D laser-scanning technology.

Part 5 China

In Underworld Great Britain the team examines the deepest shaft discovered in the UK – Titan. They hope a 3D scan can reveal its true size and secrets about its formation.

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