Mané-er-Hroëk tumulus, tumulus in Locmariaquer, France

Mané-er-Hroëk is a large Neolithic burial mound in Locmariaquer, Brittany, shaped like an elongated oval measuring around 100 meters long and 60 meters wide, rising about 10 meters high. Inside lies a rectangular stone chamber approximately 4 meters long, built with massive flat stones forming the floor and ceiling.

The mound is a Neolithic tumulus, excavated in 1863 by René Galles, who found the burial chamber intact. It was listed as a monument historique by the 1889 list. The chamber held a jadeite ring, a 350 mm jadeite axe point, 9 jasper pendants, 45 callaïs beads and 101 polished fibrolite axes, now in the Musée d'histoire et d'archéologie in Vannes.

This mound served as a gathering place for remembering the dead and honoring ancestors. The effort required to build such a large structure reflects how central burial rituals and collective memory were to the people who created it.

The site is freely accessible and open for exploration at any time, with the stone chamber accessible for visitors to view the interior structure. Wear sturdy shoes as the ground is uneven, and the location offers views over the Golfe du Morbihan.

The chamber was found intact, and at its centre lay a jadeite ring 93 mm across, with the point of a 350 mm jadeite axe resting on it. Around it were 9 jasper pendants, 45 callaïs beads and 101 polished fibrolite axes. The finds are kept at the Museum of History and Archaeology in Vannes.