The Troglodytes were real peoples of the ancient world, not mythical creatures. Greek geographers used the term “Troglodytae” (Τρωγλοδύται, literally “dwellers in caves”) to describe various populations who lived in caves or underground shelters, particularly along the western coast of the Red Sea in what is now eastern Egypt, Sudan, and Ethiopia. Over the centuries, the word drifted far from its origins, becoming a generic insult for anyone considered primitive. But the actual Troglodytes had sophisticated ways of life adapted to harsh landscapes, and some of their descendants still live in cave dwellings today.
The Greek Origins of the Term
The word first appears in the writings of Herodotus, the fifth-century BCE Greek historian. In Book IV of his Histories, he describes “cave-dwelling Ethiopians” who were hunted by the Garamantes, a Libyan people who pursued them in four-horse chariots. Herodotus noted that these Troglodyte Ethiopians were “swifter of foot than any men of whom tales are brought to us,” suggesting they survived partly through sheer speed in terrain where chariots couldn’t easily follow.
Greek geographers applied the label broadly. Any group living in caves qualified, but the term stuck most firmly to the peoples of the Red Sea coast. The geographer Strabo, writing in the first century BCE, placed them more precisely. He described the “countries of the Troglodytes” as stretching along the coast opposite the ancient city of Meroë (in modern Sudan), roughly ten to twelve days’ journey from the Nile. This placed them in a long, arid corridor between the Nile Valley and the sea, where caves carved into limestone offered natural shelter from extreme heat.
Where the Troglodytes Actually Lived
The core Troglodyte territory ran along what ancient writers called the western coast of the Red Sea, covering parts of modern Egypt, Sudan, Eritrea, and Ethiopia. This is rugged, dry country where limestone and sandstone formations create natural caves and overhangs. Greek and Roman writers treated it as a defined region, sometimes calling it “Troglodytica,” almost like a country name.
The geology backs up the ancient accounts. Southeastern Ethiopia, for example, is rich in Mesozoic limestone formations riddled with karst caves. Archaeological surveys in the region have documented dozens of cave sites with evidence of human occupation stretching back tens of thousands of years. One of the most notable, Porc-Epic cave near the city of Harar, contains extensive stone tool assemblages and animal remains from the Middle Stone Age. Nearby sites like Goda Buticha and Gilbo Tate have yielded stratified deposits showing long periods of habitation, along with rock art depicting domestic animals. These weren’t random hideouts. They were lived-in spaces, used and reused across generations.
Cave Dwelling as Strategy, Not Primitiveness
Ancient Greek writers treated cave dwelling as a sign of being “uncivilized,” and that bias shaped how the Troglodytes were remembered. But modern archaeology tells a different story. Caves in arid and semi-arid regions offer natural insulation, staying cool during scorching days and retaining warmth at night. They require no construction materials in landscapes where timber and stone blocks are scarce. Living underground or in natural shelters was a practical, intelligent adaptation to the environment.
The broader assumption that early humans were primarily “cavemen” has also been challenged. By the 1980s, archaeologists had recognized that caves were far from being permanent residences for most prehistoric peoples. Margaret Conkey, an anthropological archaeologist at the University of California, Berkeley, pushed this rethinking further by asking what cave-using peoples actually did all day. Her work, and subsequent research, showed that almost all known cave sites were seasonal occupations, used for perhaps a couple of months per year. People moved through landscapes, using caves as one resource among many. The image of humans huddled permanently in dark caverns says more about Western assumptions of progress (trees to caves to houses to cities) than about how people actually lived.
Linnaeus and the “Night Man”
The term took a strange scientific detour in the 18th century. Carl Linnaeus, the Swedish naturalist who created the modern system of biological classification, proposed in his 1758 Systema Naturae that humanity wasn’t one species but two. Alongside Homo sapiens (which he also called Homo diurnus, “day man”), he introduced Homo troglodytes, also known as Homo nocturnus, or “night man.”
Linnaeus described these supposed people as small, pale white, with short curly hair and eyes that couldn’t tolerate daylight. They lived in caves, emerged only at night to steal from human settlements, spoke in hissing sounds, and could be kept as servants. He placed their habitat in the islands of Southeast Asia, near Malacca. The description was based on secondhand reports from Swedish East India Company travelers, not on any direct observation or specimen. It was, in modern terms, an invalid taxon, likely conflating folklore, misidentified primates, and garbled traveler’s tales. But the classification lingered in scientific literature for decades and reinforced the association between “troglodyte” and something less than fully human.
How the Word Became an Insult
By the 19th century, “troglodyte” had shed its geographic specificity and become a general-purpose put-down. The discovery of Neanderthal bones in the 1850s gave Europeans a vivid image of “cave men” as brutish, stooped, subhuman figures, and “troglodyte” absorbed all of those connotations. In Robert Louis Stevenson’s 1886 novel Strange Case of Dr Jekyll and Mr Hyde, Mr. Hyde is described as “troglodytic,” carrying both the literal meaning of resembling a caveman’s skeleton and the implication of being animalistic, mentally inferior, and wild.
This evolution is ironic. The actual Troglodytes of the Red Sea coast were mobile, resourceful populations adapted to one of the harshest environments on Earth. The word named after them ended up meaning the opposite of resourceful.
Troglodyte Dwellings That Survive Today
Some of the most striking troglodyte architecture still in use sits in Matmata, a town in southern Tunisia. Cut into mountainsides, these underground dwellings date back over a thousand years to Berber communities, and possibly as far back as Phoenician or Roman times. The homes are organized around central open-air courtyards dug deep into the earth, with rooms tunneled outward from the pit. The design keeps interiors cool in summer and warm in winter, a natural climate control system in a region where surface temperatures can be extreme.
More than two thousand people still live in Matmata’s troglodyte homes, though many dwellings now include electricity and plumbing. The town gained international fame as a filming location for Star Wars (Luke Skywalker’s childhood home on Tatooine was a real troglodyte dwelling). Tourism has brought attention and income, but younger generations are increasingly migrating to urban centers. The traditional lifestyle is fading, even as the physical structures endure. Some homes have been converted into guesthouses, giving visitors a firsthand sense of what underground living feels like: quiet, cool, and surprisingly spacious.