Definition of passage grave in English:
A prehistoric megalithic burial chamber of a type found chiefly in western Europe, with a passage leading to the exterior. Passage graves were originally covered by a mound, which in many cases has disappeared, and most date from the Neolithic period.
- The Neolithic passage grave, or allée couverte, at Les Fades (also known as Le Palet-de-Roland), is at 24 m. the longest in Southern France; the mound that originally covered it was 36 m. long.
- Similar carvings appear at Newgrange, a megalithic passage grave near Dublin in County Meath, which also dates from the fourth millennium B.C.E.
- The passage grave was originally within a stone circle, twelve pillars of which still survive.