Long barrows are a style of monument constructed across Western Europe in the fifth and fourth millennia BCE, during the Early Neolithic period. Typically constructed from earth and either timber or stone, those using the latter material represent the oldest widespread tradition of stone construction in the world. Around 40,000 long barrows survive today.
View of Wayland's Smithy Long Barrow, a long barrow near Uffington in Oxfordshire
In cases such as Kit's Coty House, Kent, the earthen mound of a long barrow has been worn away by the weather or removed, exposing a stone chamber within. In this case, the surviving chamber represents a trilithon that is commonly called a dolmen.
Jacket's Field Long Barrow, one of the earthen long barrows that are clustered around the River Stour in Kent.
The Grønsalen Barrow on the Danish island of Møn
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