Wikipedia page about this book: https://en.wikipedia.org/wiki/Niels_Klim%27s_Underground_Travels

Release date is 2012-11-22

Produced by Annemie Arnst and Marc D'Hooghe (Images generously made available by the Internet Archive.)

"De onderaardsche reis van Klaas Klim" by Ludvig Holberg is a satirical science-fiction novel published in 1741. When a curious philosophy student investigates a mysterious cave in Bergen, he falls into an extraordinary underground world orbiting an inner sun. There he encounters sentient trees, walking plants, and a utopian society that challenges his assumptions about morality, gender equality, religion, and government. His journey through this strange realm becomes a biting satire of European culture and philosophy. (This is an automatically generated summary.)

Original publication data not identified