In such a fishermen's town, even agriculture takes advantage of the sea. In this case it does it to grind grain. The expansion of corn meant that the small river mills were not enough, and at the beginning of the 19th century the one known as Muíño de Bazarra was built, after the name of its builder, D.Ignacio Perez Bazarra, today better known as Muíño de Pozo do Cachón. It is, by its size and state of conservation, one of the most important of the Peninsula.
Its operation takes advantage of the movement of the tides.
The key is in the dam of more than 230 m. During high tide the water accumulates and the dike is closed to prevent its escape. When the water level has dropped, the floodgates are opened, so that the retained water flows out driving the 'moas', crushing the grain.
In the Pozo do Cachón, over these 'moas' stands a plant that served as a warehouse and even as a bathhouse for treatments with seawater and algae. Today it is a cultural center open to the public.