Digs carried out on the site have revealed the presence of remains indicating that the site was frequented from the Mesolithic era onwards. During Roman times, the Yaudet, then a fishing and trading port on the Armorican coast, developed a defence system against pirates attacking from the North Sea, strengthening the old Gaulish ramparts.
During the 18th century, a guard-room was built for soldiers defending the area from attacks from English ships.
Other remains are more of a mystery, such...