Planet Earth

Caves

Documentary Mar 26, 2006 48 min iTunes

Available on Prime Video, discovery+, Sling TV, Max

S1 E4: 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 waterfalls with microscopic hooks on their fins. Cave swiftlets navigate by echo-location and build nests out of saliva. The Texas cave salamander has neither eyes nor pigment. Planet Earth gets unique access to a hidden world of stalactites, stalagmites, snotites and troglodytes.

Documentary Mar 26, 2006 48 min iTunes

TV-PG

Information

Released: 2006
Run Time: 48 min
Rated: TV-PG
Region of Origin: United Kingdom

Languages

Original Audio: English (United Kingdom), English, German (Germany)
Audio: English (United States) (AAC)
Subtitles: English (CC)

Accessibility

: Closed captions (CC) refer to subtitles in the available language with the addition of relevant non-dialogue information.