000			00730 g a2200145 4500
245			_aPLANET EARTH DISC 2
260			_c2016
520			_aNot Rated The Earth's large, deep calcareous caves are virtually inaccessible and therefore barely explored - requiring expert diving where flooded. Some of its wildlife is as strange and specific as in the deep, darkest part of the ocean, whether physically adapted -notably to the dark. Nevertheless, some caves(did) play an important part in native cultures, even as sources of fresh water for some Mayan cities. Also, DESERTS and ICE WORLDS
521			_aRated TV-G
590			_a9.5 ON SCALE OF 10
653			_aDOCUMENTARY - SERIES
700			_aNA
700			_aNA
942			_cDVD
999			_c21815 _d21815