On a volcanic island near the Kingdom of Hetvia rules Count Dakkar, a benevolent leader and scientist who has eliminated class distinction among the island's inhabitants. Dakkar, his sister Sonia and her fiance, engineer Nicolai Roget have designed a submarine which Roget pilots on its initial voyage just before the island is overrun by Baron Falon, despotic ruler of Hetvia. Falon sets out after Roget in a second submarine and the two craft, diving to the ocean's floor, discover a strange land populated by dragons, giant squid and an eerie undiscovered humanoid race.

• DirectorLucien Hubbard
• Release5 October 1929
• Genre
  Adventure / Science Fiction
• Duration1h 35m
• Budget?
• Revenue?
• Rate
  

  5.235
  17 reviews
• Productions

  Metro-Goldwyn-Mayer