Neils Klim’s Journey Under the Ground by Ludvig Holberg

18th-century sci-fi from a Danish Voltaire

Niels Klim’s Journey Under the Ground or Niels Klim’s Underground Travels is a science fiction novel published way back in 1741. It was penned by Danish author Ludvig Holberg. The edition I read included a brief biography of Holberg, which makes him out to sound like Denmark’s version of Voltaire. He was that Scandinavian nation’s pre-eminent man of letters in the 18th century, an Enlightenment freethinker who, besides this one novel, also wrote books on philosophy, history, and law, as well as plays and poetry. Niels Klim’s Journey, Holberg’s only novel, is very much in the same vein of satirical sci-fi and fantasy literature as Voltaire’s Micromegas (1752) and Jonathan Swift’s Gulliver’s Travels (1726).

The story takes place in 1664. Niels Klim, a recent graduate of a Copenhagen university, returns to his hometown of Bergen in Norway. Near that city is a mountain with a mysterious hole in it, from which warm air emanates. Someone should really investigate that hole, so Niels volunteers to lead an expedition. He enters the cave with a small team of men. While rappelling into a chasm, Niels’s rope breaks, and he falls for a very long time.

It turns out that the Earth is a hollow shell. Inside is an inner space complete with a small sun and a planet about 600 miles in circumference, named Nazar. Niels lands on this planet and finds himself in the kingdom of Potu. The citizens of Potu are intelligent, speaking trees. Unlike trees we know, they are not stationary, and can walk using their roots, but not quickly. They welcome Niels into their society and, due to his long legs, they give him the job of courier-general. The Potuans include many races, essentially different species of tree, each with its own peculiar characteristics and personality traits. In addition to Nazar, Niels also explores what Nazarians call “the firmament,” actually the interior surface of the Earth’s sphere, which also bears nations and their inhabitants. There he encounters civilizations of beings resembling animals of the surface world, but possessing language, the ability to walk upright, and human-like hands.

In total, Niels spends twelve years in this underground universe. Unlike Gulliver, who visited about a half dozen different lands in his travels, Niels seems to encounter a new race of beings every few pages, each with their own strange quirks. I’m sure many of these fictional peoples are meant to satirize different nations and polities of Holberg’s day. Not being an 18th-century Dane myself, I’m sure much of that satire was lost on me. For today’s reader, however, Niels Klim’s Journey Under the Ground does make for more accessible and humourous reading than Voltaire’s satires, such as Candide or Zadig. Even if you don’t know the politics of the time, you can enjoy Holberg making fun of various types of people and systems of government. There is a land where gender roles are reversed, for example. The women are sexual predators, and the men are expected to be chaste virgins and slut-shamed if they aren’t. Thus, Holberg points out some of the ridiculous double standards placed on women of his time. Another land is inhabited by philosophers and academics who are so focused on their search for knowledge that they have abandoned all personal hygiene and social graces. Each little country Niels visits has its share of comedic surprises.

With this novel, Holberg inaugurated the hollow-Earth subgenre of science fiction, from which would arise Symzonia (1820), Journey to the Center of the Earth (1867), Mizora (1881), A Strange Manuscript Found in a Copper Cylinder (1888), The Smoky God (1908), and At the Earth’s Core (1914), among others. Niels Klim’s Journey Under the Ground deserves respect as a pioneering work in science fiction, but it’s not just some stodgy old vintage antique that belongs in a museum display case. After all these years, it’s still fun to read.