Construction of menhir Néolithique (≈ 4100 av. J.-C.)
Estimated time of erection.
1963
Menhir fall
Menhir fall 1963 (≈ 1963)
Reversed that year.
4 janvier 1967
Historical monument classification
Historical monument classification 4 janvier 1967 (≈ 1967)
Official protection by order.
1979
Menhir adjustment
Menhir adjustment 1979 (≈ 1979)
Put back up after his fall.
Aujourd'hui
Aujourd'hui
Aujourd'hui Aujourd'hui (≈ 2025)
Position de référence.
Heritage classified
Menhir dit La Pierre Longue (cad. B 636) : classification by decree of 4 January 1967
Key figures
Jacques Briard - Archaeologist
Studyed Breton megaliths.
Yvan Onnée - Archaeologist
Worked on Lampouy's alignments.
Origin and history
La Pierre Longue, also known as Roche Longue or Roche Pointue, is a neolithic menhir located in Guitté, in the Côtes-d'Armor department. This quartzite monument is 4.28 meters high for 2.20 meters wide and 1.18 meters thick. His elongated, pointed shape earned him his name. Reversed in 1963, it was straightened in 1979.
Menhir has been classified as historical monuments since 4 January 1967. It is located in the immediate vicinity of the megalithic alignments of Lampouy, on the neighbouring commune of Médréac, and the Menhir de la Roche Carrée. These elements suggest that it was part of a larger megalithic ensemble, typical of the Breton region.
Archaeological sources, such as the works of Jacques Briard and Yvan Onnée, underline the importance of megaliths in the department of Ille-et-Vilaine and Côtes-d'Armor. These monuments reflect the funeral and cultural practices of the Neolithic societies of the region. The Long Stone of Guitté thus illustrates the megalithic heritage of Breton, marked by isolated alignments and menhirs.
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