A cairn is a human-made pile of stones raised for a purpose, usually as a marker or as a burial mound. The word cairn comes from the Scottish Gaelic: càrn.
A cairn marking a mountain summit in Graubünden, Switzerland.
The biggest cairn in Ireland, Maeve's Cairn on Knocknarea.
One of the cairns at Carrowkeel Megalithic Cemetery in Ireland, which covers a passage tomb.
Cairn of the Neolithic-era passage tomb on Gavrinis island, Brittany
A tumulus is a mound of earth and stones raised over a grave or graves. Tumuli are also known as barrows, burial mounds or kurgans, and may be found throughout much of the world. A cairn, which is a mound of stones built for various purposes, may also originally have been a tumulus.
Tomb of King Alyattes at Bin Tepe in Lydia, modern Turkey, built c. 560 BC. It is one of the largest tumuli ever built, with a diameter of 360 meters and a height of 61 meters.
The Royal Mounds of Gamla Uppsala in Sweden from the 5th and 6th centuries. Originally, the site had 2,000 to 3,000 tumuli, but due to quarrying and agriculture only 250 remain.
La Cambe German war cemetery
One of the Hallstatt culture–era tumuli in the Sulm valley necropolis