Vladimir Obruchev’s novel “Plutonia” is based on the once-popular scientific hypothesis of a hollow Earth, which the French science fiction writer Jules Verne developed in his novel “Journey to the Center of the Earth.”
The heroes of the novel, six brave explorers, penetrate into the interior of the Earth, into an underground world where they encounter prehistoric flora and fauna (dinosaurs of the Tertiary period), as well as a tribe of primitive people. In this underground world, a small sun shone day and night, named Pluto by the travelers, and the entire underground world was called Plutonia. They entered our planet through a huge opening located far to the north, among the ice of Antarctica, gradually descending along its gentle slope.
The novel is written in the form of a travel diary, each chapter of which describes yet another feature of the underground world.