The Locmariaquer megaliths are a complex of Neolithic constructions in Locmariaquer, Brittany. They comprise the elaborate Er-Grah tumulus passage grave, a dolmen known as the Table des Marchand [1] and "The Broken Menhir of Er Grah", the largest known single block of stone to have been transported and erected by Neolithic people.
The broken menhir, erected around 4700 BC at the same time as another 18 blocks nearby, is thought to have been broken around 4000 BC. Measuring 20.60 metres (67.6 ft) and with a weight of 330 tons, [2] the stone is from a rocky outcrop located several kilometres away from Locmariaquer. The impressive dimensions of this menhir still divide specialists about the techniques used for transport and erection, but the fact that this was achieved during the Neolithic era remains remarkable.
Worked over its entire surface, the monument bears a sculpture representing a "hatchet-plough". Unfortunately, today this is seriously eroded and very difficult to see.
It is not known what caused the menhir to topple and break into the four pieces that are now seen. At one time it was believed that the stone had never stood upright, but archaeological findings have proven that it did. The most popular theory is that the stone was deliberately pulled down and broken. Certainly other menhirs that accompanied it were removed and reused in the construction of tombs and dolmens nearby. However, in recent years, some archaeologists have favoured the explanation of an earthquake or tremor, and this theory is supported by a computer model.
The Table des Marchand is a large dolmen containing a number of decorations. The main capstone of the chamber includes a large carving on its underside depicting an axe, and part of a carved depiction of a plough, apparently pulled by oxen. This fragment indicates that the capstone was originally part of the broken menhir, since the design matches up with carvings on the broken remains across the breaks. Other parts were used in the tumulus and in the nearby dolmen of Gavrinis, on a nearby island. The stone at the back of the chamber contained an engraved stele with whorls and arched decorations which may represent fields of crops.
The dolmen was fully exposed and above ground until it was excavated and rebuilt inside a cairn in 1993, reconstructing its original appearance and protecting its contents.
The Er-Grah tumulus is 140 metres (460 ft) long. It was probably originally constructed in the fifth millennium BC as a cairn, which was extended in both directions. A pavement surrounded the stepped structure. The capstone indicates that the monument was completed at around 3,300 BC. According to A. W. R. Whittle, "In front of the south facade of the primary phase of the long cairn of Er Grah, close to where the menhir Brise originally stood...a pair of domesticated cattle were found in a pit. Radiocarbon determinations suggest a date in the late sixth and early fifth millennium BC." [3]
A dolmen or portal tomb is a type of single-chamber megalithic tomb, usually consisting of two or more upright megaliths supporting a large flat horizontal capstone or "table". Most date from the early Neolithic period and were sometimes covered with earth or smaller stones to form a tumulus. Small pad-stones may be wedged between the cap and supporting stones to achieve a level appearance. In many instances, the covering has eroded away, leaving only the stone "skeleton".
A menhir, standing stone, orthostat, or lith is a large human-made upright stone, typically dating from the European middle Bronze Age. They can be found individually as monoliths, or as part of a group of similar stones. Menhirs' size can vary considerably, but they often taper toward the top.
A megalith is a large stone that has been used to construct a prehistoric structure or monument, either alone or together with other stones. There are over 35,000 in Europe alone, located widely from Sweden to the Mediterranean sea.
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.
Megalithic art refers to art either painted or carved onto megaliths in prehistoric Europe. Elizabeth Shee Twohig has coined the term Megalithic art in her study of 'The Megalithic Art of Western Europe'. Her original definition of Megalithic art focused on paintings or carvings found on the structural elements, like the kerbstones, orthostats, or capstones of megalithic tombs, but recent investigations have included decorations on stelae and menhirs.
Cup and ring marks or cup marks are a form of prehistoric art found in the Atlantic seaboard of Europe (Ireland, Wales, Northern England, Scotland, France, Portugal, and Spain – and in Mediterranean Europe – Italy, Azerbaijan and Greece, as well as in Scandinavia and in Switzerland.
Kilmartin Glen is an area in Argyll north of Knapdale. It has the most important concentration of Neolithic and Bronze Age remains in mainland Scotland. The glen is located between Oban and Lochgilphead, surrounding the village of Kilmartin. In the village, Kilmartin Museum explains the stories of this ancient landscape and the people who dwelt there. There are more than 800 ancient monuments within a six-mile (ten-kilometre) radius of the village, with 150 monuments being prehistoric. Monuments include standing stones, a henge monument, numerous cists, and a "linear cemetery" comprising five burial cairns. Several of these, as well as many natural rocks, are decorated with cup and ring marks.
Locmariaquer is a commune in the Morbihan department in Brittany in north-western France.
Poulnabrone dolmen is an unusually large dolmen or portal tomb located in the Burren, County Clare, Ireland. Situated on one of the most desolate and highest points of the region, it comprises three standing portal stones supporting a heavy horizontal capstone, and dates to the Neolithic period, probably between 4200 BC and 2900 BC. It is the best known and most widely photographed of the approximately 172 dolmens in Ireland.
The Carnac stones are an exceptionally dense collection of megalithic sites near the south coast of Brittany in northwestern France, consisting of stone alignments (rows), dolmens, tumuli and single menhirs. More than 3,000 prehistoric standing stones were hewn from local granite and erected by the pre-Celtic people of Brittany and form the largest such collection in the world. Most of the stones are within the Breton municipality of Carnac, but some to the east are within neighboring La Trinité-sur-Mer. The stones were erected at some stage during the Neolithic period, probably around 3300 BC, but some may date to as early as 4500 BC.
The dolmens of Jersey are neolithic sites, including dolmens, in Jersey. They range over a wide period, from around 4800 BC to 2250 BC, these dates covering the periods roughly designated as Neolithic, or “new stone age”, to Chalcolithic, or “copper age”.
Gavrinis is a small island in the Gulf of Morbihan in Brittany, France. It contains the Gavrinis tomb, a megalithic monument notable for its abundance of megalithic art in the European Neolithic. Administratively, it is part of the commune of Larmor-Baden.
The Cairn of Barnenez is a Neolithic monument located near Plouezoc'h, on the Kernéléhen peninsula in northern Finistère, Brittany (France). It dates to the early Neolithic, about 4800 BC. Along with the Tumulus of Bougon and Locmariaquer megaliths, also located in Great West France, it is one of the earliest megalithic monuments in Europe and one of the oldest man-made structures in the world. It is also remarkable for the presence of megalithic art.
The Tumulus of Bougon or Necropolis of Bougon is a group of five Neolithic barrows located in Bougon near La-Mothe-Saint-Héray, between Exoudon and Pamproux in Nouvelle-Aquitaine, France. Their discovery in 1840 raised great scientific interest. To protect the monuments, the site was acquired by the department of Deux-Sèvres in 1873. Excavations resumed in the late 1960s. The oldest structures of this prehistoric monument date to 4800 BC.
Tinkinswood or its full name Tinkinswood Burial Chamber, also known as Castell Carreg, Llech-y-Filiast and Maes-y-Filiast, is a megalithic burial chamber, built around 6,000 years ago, during the Neolithic period, in the Vale of Glamorgan, near Cardiff, Wales.
Parc Cwm long cairn, also known as Parc le Breos burial chamber, is a partly restored Neolithic chambered tomb, identified in 1937 as a Severn-Cotswold type of chambered long barrow. The cromlech, a megalithic burial chamber, was built around 5850 years before present (BP), during the early Neolithic. It is about seven 1⁄2 miles (12 km) west south–west of Swansea, Wales, in what is now known as Coed y Parc Cwm at Parc le Breos, on the Gower Peninsula.
Archaeology is promoted in Jersey by the Société Jersiaise and by Jersey Heritage. Promotion in the Bailiwick of Guernsey being undertaken by La Société Guernesiaise, Guernsey Museums, the Alderney Society with World War II work also undertaken by Festung Guernsey.
