O Rosal valley is rich in prehistoric remains, mainly preroman “castros”. This feature allows rural house Abadía das Eiras, based in San Bartolome parish, within O Rosal Council, to offer an endless number of routes in which Miño River is the main character. One of the best known spots is the ethnographic group of Folón and Picón mills, located in Martín and Picón, within Santa Mariña Parish. Through this spot, based on the steep slopes of mount Campo do Couto, flows Cal River, a tributary of the Tamuxe which has been channeled to take advantage of its energy, forming Folón and Picón streams
On the neighboring council of A Guarda, we can find the great archeological reservoir of Santa Trega, which occupies an area of some 20 ha, from which only a small part has been excavated. Its origins have been documented back on the 6th century before Christ, reaching its main degree of development with the change or era. In the peninsula of Tegra, there was a real city of between 3000 and 5000 inhabitants in which Mediterranean and Atlantic culture converged. Miño estuary is the most interesting natural space in A Guarda. Its mouth forms an estuary and it is considered as one of the main wetlands in the Peninsula, with the confluence of two ecosystems, fluvial and maritime. The excursion must continue beyond the border, to the neighbouring Portuguese villa of Caminha where you can appreciate its colourful shops, its magnificent walls and its attractive gastronomy.