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The Cave of Swallows in Mexico is a 400m vertical shaft, deep enough to engulf the Empire State Building. The Lechuguilla cave system in the USA is 193km long with astonishing crystal formations. Caves are remarkable habitats with equally bizarre wildlife. Planet Earth gets unique access to a hidden world of stalactites, stalagmites, snotites and troglodytes.
Tour the mightiest mountain ranges, starting with the birth of a mountain at one of the lowest places on Earth and ending at the summit of Everest. One of Earth's rarest phenomena is a lava lake that has been erupting for over 100 years. The same forces built the Simian Mountains where troops of gelada baboons live, nearly a thousand strong. The program also brings us astounding images of a snow leopard hunting on the Pakistan peaks, a world first.
The ultimate portrait of our planet looks at the key factors that shape our natural history. The lives of animals and plants are dominated by the sun and fresh water which trigger seasonal journeys. The latest technology and aerial photography enable the Planet Earth team to track some of the greatest mass migrations. In the Arctic spring a mother polar bear and cubs emerge from their winter den. They have just two weeks to cross the frozen sea before it melts and they become stranded. Share the most intimate and complete picture of polar bear life ever filmed. Further south time-lapse cameras capture the annual transformation created by the Okavango floods.
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- Rating: None
- Premise: Environmental themes are explored in a series of documentary films. (more)