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Origin and history

The Lostmarc'h alignment is an iconic megalithic site located in the municipality of Crozon, Finistère. Originally composed of two parallel alignments, it counted eleven stones in the largest and three in the second according to 19th century observations. The quartzite stones come from the nearby cliffs of the Long Point, although the region is geologically dominated by Ordovician scales.

In 1835 de Fréminville mentioned for the first time two alignments, confirmed in 1876 by René-François Le Men. In 1910, Alfred Devoir recorded thirteen stones spread over two lines, five of them standing. The condition of the site deteriorated over time: in 1929, B. Le Pontois described it as "sad." Despite this, it was listed as a historical monument on May 23, 1980.

Today, there are about fifteen menhirs, six of whom are still standing, the highest 2.90 metres. This site bears witness to the funeral or ritual practices of Neolithic in Brittany. Quartzite blocks, transported from nearby cliffs, highlight the collective effort necessary for their erection.

Historical sources, such as the bulletins of the Société Archéologique du Finistère, document its evolution. Authors such as Alfred Devoir or René-François Le Men have contributed to his knowledge, while recent inventories, such as that of Jean Mornand (1998), specify his archaeological context.

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