Niels Klim's Underground Travels

Being A Narrative Of His Wonderful Descent To The Subterranean Lands; Together With An Account Of The Sensible Animals And Trees Inhabiting The Planet Nazar And The Firmament

Niels Klim's Underground Travels, originally published in Latin as Nicolai Klimii Iter Subterraneum (1741), is a satirical science-fiction/fantasy novel written by the Norwegian-Danish author Ludvig Holberg. His only novel, it describes a utopian society from an outsider's point of view, and often pokes fun at diverse cultural and social topics such as morality, science, sexual equality, religion, governments, and philosophy. - From the wiki