Its name translates a place where there are many mounds covered with stones, known as cairns. These mounds are the earliest traces of occupation of the site Carnoët since the Romans had established a camp near several Roman roads including that of the Vorgium-Carhaix Yaudet.
Since then, the remains of paved road have been updated to Rospellem.
In 1197, Hill Tossen Gweltas Sant will be the scene of a battle between the Britons to British troops of Richard the Lionheart.
A Carnoët the top of the hill of Saint Gildas gives us a great view over the entire circular region Poher.
