Planet Earth. Episode 4, Caves / narrator, David Attenborough ; producer, Huw Cordey ; a BBC/Discovery Channel/NHK co-production ; series producer, Alastair Fothergill.

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. Cave angel fish cling to the walls behind w...

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Bibliographic Details

Online Access:	Streaming Video (via Alexander Street Press)
Other Authors:	Fothergill, Alastair (Producer), Cordey, Huw (Producer), Attenborough, David, 1926- (Narrator)
Format:	Video
Language:	English
Published:	London : BBC Worldwide, 2006.
Subjects:	Earth (Planet) Ecology. Animals. Caves. Natural history. Physical geography. Documentary television programs. Nature television programs. Science television programs.