Discovery Channel - HDTV BBC Planet Earth 04of11 Caves 720p Divx6 Ac3 avi

4. Caves

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 and 500m deep with astonishing crystal formations hanging from its chambers.

Although often overlooked, caves are remarkable habitats with equally bizarre wildlife. Cave angel fish cling to the walls behind cave waterfalls with microscopic hooks on their flattened fins. Cave swiftlets navigate by echo-location and build nests out of saliva. The Texas cave salamander has neither eyes nor pigment. Unique access to a hidden world of stalactites, stalagmites, snotites and troglodytes brings a wealth of surprises.


Technical Specs

Video Codec: Divx6
Video Bitrate: 6000
Video Resolution: 1280x720
Video Aspect Ratio: 1.75:1
Audio Codec: AC3
Audio BitRate: 384kbps 48kHz
Audio Channels: 6
RunTime Per Part: 48
Number Of Parts: 11
Part Size: 2200
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