The word "dolmen" entered English in 1859 from French dolmen, a term coined by French antiquarians in the late 18th century from Celtic language elements. The exact derivation is disputed. One theory traces it to Cornish tolmen, combining tol (hole, perforation) with men (stone), describing a stone with a hole. The alternative and more widely cited etymology derives it from Breton taol (table) with maen (stone), giving "stone table" — an apt description of the structure's appearance: a large flat capstone supported by upright megaliths.
The irony of the word's origin is that it sounds primordially ancient but is actually a modern scholarly coinage. The term was first used by Théophile-Malo de La Tour d'Auvergne in 1796, making the word younger than the American Constitution while describing structures that are 4,000 to 6,000 years old. Before antiquarians coined "dolmen," these structures were known by various local names: in Ireland, "portal tombs"; in Wales, "cromlechs"; in Scandinavia, "dysser."
The structures we now admire as dramatic freestanding stone monuments were never intended to stand exposed. Dolmens were originally burial chambers covered by earthen mounds or cairns. The massive capstone and supporting uprights formed the internal skeleton of a tomb that was entirely enclosed by soil. Over thousands of years, the covering earth eroded away, leaving the stone framework exposed in the striking table-like configuration that modern visitors find
Dolmens are found across an enormous geographical range: from Ireland and Britain through France, Iberia, and Scandinavia, across the Mediterranean to North Africa, and throughout Korea and parts of East Asia. Korea alone contains roughly 40% of the world's dolmens — an astonishing concentration that reflects the importance of megalithic traditions in ancient Korean culture. The global distribution suggests either independent invention of a logical structural form or cultural connections across vast distances during the Neolithic period.
The construction of dolmens required sophisticated engineering knowledge. The capstones of large dolmens can weigh 20 tonnes or more, and raising them onto supporting stones without modern machinery demanded coordinated labour, careful planning, and ingenious use of levers, ramps, and possibly counterweights. This engineering achievement, accomplished by Neolithic farmers without metal tools, remains impressive even by modern standards.
Celtic terminology dominates the vocabulary of megalithic archaeology: "dolmen," "cromlech" (stone circle), "menhir" (standing stone, from Breton men + hir, long stone), and "cairn" (stone mound) are all of Celtic origin. This reflects the prominence of Celtic-speaking regions — Brittany, Wales, Cornwall, Ireland — in early antiquarian studies of prehistoric monuments.