Title from web page. Widescreen. Patrick Troughton, Frazer Hines, Michael Craze, Anneke Wills, Joseph Furst.
Summary:
The Tardis arrives on a extinct volcanic island. Before long, the travelers are captured and taken into the depths of the Earth, where they find a hidden civilization, the lost city of Atlantis. The Atlanteans worship a goddess named Amdo and use Fish People, men and women operated upon so that they can breathe under the sea, to farm the plankton-based food on which they survive.
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