Initially published in "Le journal de Tintin" from n° 42 of October 19, 1955 to n° 51 of December 19, 1956, and then published in album in April 1957, here is one of the "best-sellers" of the European comic book which became myth and symbolizes the quality public comic strip. The author, Edgar P. Jacobs (for Edgar Pierre Jacobs, 1904-1987), who was a close friend of Hergé, loved the demeasurement that took all its dimension in scientific inventions (including the famous Espadon). Another example is an extraordinary gallery of characters such as Septimus, Olrik or Miloch. The fascination exerted by this series, the fruit of a perfectionist genius, remains today intact. "On holiday in the archipelago of the Azores, Professor Mortimer makes a stupefying discovery. During the exploration of a gulf named "O foro do diabo" (the hole of the devil), he finds an unknown metal with amazing radioactive and luminescent properties. He cannot sufficiently imagine his own selves a character of the Congo, the "delicity" that the Congo, this is the "dest of the "dest" in the fact. They are accompanied by a guide, Pépé and his assistant, under whose features the adventurer Olrik, their most mortal enemy, is hiding. The latter was hired by a foreign power to recover the precious ore. The descent into the dangerous caldeiras begins. This plunge into the bowels of the earth will lead them to live their most extraordinary adventure. Elucidating a mystery of centuries, they will go to the discovery of Atlantis, its people and its enemies, explore the lost continent and risk their lives to safeguard peace in the Atlantean Empire. They will brave a thousand dangers to return to our world where Atlantis remains an unsolved riddle... The least of these dangers being not Olrik... "