Cartea detaliază ipoteza conform căreia planeta noastră nu este un bloc solid de materie, ci ar putea găzdui spații vaste locuibile, accesibile prin „porți” naturale sau artificiale.
They passed through a translucent film that felt like walking through warm oil. On the other side, the laws of geology vanished. The Architecture: Massive halls carved not by tools, but by sound or light. The Lighting: Incursiune In Lumea Subterana Emil Strainu Pdf