Timeline

Heritage classified

Key figures

Origin and history

The covered road of the Hautière, also called Le Tombeau, is a megalithic site emblematic of the Neolithic, located in the commune of Trégon, in the department of Côtes-d-Armor in Brittany. This funerary monument, typical of the period, consists of an elongated structure of 16 meters long, bounded by orthostats (arrested stone) and covered with stone tables. Its south-south-south-east/north-north-west orientation and its various materials—Armo-American sandstone, dolerite and gneiss-migmatitic—reflect the construction techniques and local resources of the time.

Classified as historical monuments by decree of 24 November 1964, this covered alley illustrates the importance of collective funeral practices in the Neolithic. The fourteen orthostats on the east side and eleven on the west side support six slabs of cover, the largest of which reaches 3.05 meters. The slab height (0.90 m) and inner width (1.05 m) suggest a limited space, probably for funeral or ritual deposits. The dominant materials, such as quartz sandstone, are characteristic of the Armomeric megaliths.

The administrative location of the site is specified by the sources: although the approximate address from the GPS coordinates mentions Beausais-sur-Mer, the official references (Merimée base, INSEE) place it in Trégon, in the Côtes-d-Armor (INSEE code 22209). This geographical disparity highlights the challenges of locating ancient archaeological sites. No information is available on its current accessibility or tourist use, but its classification in 1964 guarantees its heritage protection.

External links