Not rated.
Senior Executive Producer for National Geographic Television, John Bredar ; Managing Director, Alan Ritsko ; Senior Executive Producer, Paula S. Apsell ; editor, Emmanuel Mairesse.
Narrator: Jay O. Sanders.
Originally broadcast on television on Jan. 25, 2012.
DVD, stereo.
Subtitled for the deaf and hard-of-hearing (SDH); described video for the visually impaired.
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