We had seen this chapel while walking in the Monts d’Arrées and so visited St Michel de Brasparts, a 17C Chapel, one afternoon. It is suggested that this used to be a prehistoric cult site, perhaps dedicated to the Sun, or it might have had a connection with the Druids. Whatever its history it was lonely and felt isolated.
The views are wonderful in all directions.
The hill was used by the Germans in WWII as a Bernhard Site – a controlling and tracking station for aircraft with a range of 400kms. There is no information about this on the hill but this website has information and photgraphs.