Until the end of the 18th century, there was a number of megaliths in Clermont, aligned like those in Carnac. They stood between the hamlets La Valade to the north and Le Verdier to the south. The name of the locality Pierres Brunes is a reminder of the megaliths. They were exploited by blacksmiths, and nothing of them remains. Several modern historians place them on a great ancient commercial route between Vannes in Armorica and Marseille on the Mediterranean Sea via Mende.