Neoclassical Battery (1731-1739), Juan de la Ferriere and Juan Vergel. It was part of a fortification project input Ferrol, it served to support the castles of San Felipe, A Palma and San Martin. It has two fronts, one was the river and the other towards the inlet. The hornabeque is large. The material is masonry. Example of military architecture, with magnificent views over the estuary.