The humble pile of stones is one of humanity's most universal monuments
Scottish clansmen once each dropped a stone on a heap before battle; survivors took one back, and the stones left over became a memorial to the fallen. From the Highlands to Hawaii, Mongolia and Korea, people have been stacking rocks with purpose since prehistory, and the Irish word for such a pile is cairn.
A cairn can be a few stones marking a hiking trail or a man-made hill. In prehistoric Eurasia many were substantial Bronze Age or older burial mounds, the stone counterparts of earthen tumuli, sometimes with chambers inside. From the Bronze Age, stone-lined burial boxes called cists were set into cairns in prominent spots, often on the skyline above the dead person's village, perhaps to deter robbers and scavengers or, some suggest, to keep the dead from rising. Archaeologists in Blaenau Gwent, Wales, revealed Neolithic chieftains' cairns about 4,500 years old in February 2020.
The word is shared across Celtic tongues: Welsh carn, Breton karn, Cornish karn. Cornwall may even owe its name to the cairns on its hills, including the one crowning Brown Willy on Bodmin Moor, 5 metres high and 24 across. In Ireland people carry a stone uphill to add to a summit cairn, and an old Gaelic blessing promises to put a stone on your cairn.
Practical uses abound. On Inishmore, the Iron Age fort of Dún Aonghasa is ringed by small cairns and jutting rocks standing in for earth ramparts on soil-poor limestone. Icelanders marked single-file paths with cairns that still stand where the tracks have vanished, and Norse Greenlanders lined them up to steer reindeer towards a drop. Some Indigenous peoples of North America built similar lanes towards buffalo jumps. In Genesis, Jacob and Laban raised a heap of stones called Gilead to mark their border.
Many cultures invested them with spirit. Greek legend says the first cairn formed when the gods pelted Hermes with pebbles to vote in his favour at a trial brought by Hera. Mongolian ovoos host Tengriist and Buddhist ceremonies, Hawaiians still build ahu as altars to honour ancestors, and Korean hikers add a stone for luck in a tradition rooted in reverence for the Mountain Spirit.
Source: Cairn
