Bordering the municipalities of Carnac and Ploemelh, the Galzan stream runs through a small valley, home to a series of 70 horizontal stones.
The site was identified during explorations in the early twenty-first century, and is in a remarkable state of preservation. It can be accessed via a footpath from the village of Kerveno, Carnac, and is located 200 metres from the Mané Rumentur tumulus.