Kernourz dolmen, Megalithic burial structure in Le Bono, France

Kernourz dolmen is an elbow-shaped gallery grave beneath a grass-covered mound 20 to 30 m across and up to 4 m high. Its passage runs about 12 m before the bend and 8 m after it, built of 17 upright stones and eight capstones in the front section, and about 18 uprights with five larger capstones behind, where the chamber widens. A large heart-shaped slab covers the corner.

Built around 3000 BCE, this elbow-shaped dolmen is one of only seven known examples, all located within about 100 km between the Loire and Blavet estuaries. In the 8th century BCE, at the start of the Iron Age, six circular graves with diameters of 10 to 16 m were added around the mound, containing cremated remains in rectangular pits.

Five stones in the rear chamber are carved with motifs known from Les Pierres-Plates, and five upright stones there bear engravings. The site is also called Tumulus du Rocher or Allée couverte du Rocher, after the Le Rocher hamlet in Le Bono.

The site is accessible year-round and sits within a rural landscape where you can explore the structure from the surrounding ground. Sturdy footwear is recommended as the terrain around it is uneven and access to interior areas may be limited.

Around the mound lie six small circular graves, called tombelles, built at the start of the Iron Age in the 8th century BCE; each covered cremated remains in a rectangular pit. Some of the 24 bronze bracelets found in them are now kept at the Carnac Museum of Prehistory.