Miño River estuary forms natural border between Galicia and Portugal

The Miño River estuary, located between A Guarda in Galicia and Caminha in Portugal, serves as a significant natural border and a rich ecological refuge. The estuary features a diverse landscape of marshes, islands, and sandbanks that transform constantly with the tides.

Monte Santa Trega, standing over 300 meters high, provides a vantage point overlooking the river's path toward the Atlantic Ocean. The area is particularly valuable for birdwatching and offers hiking opportunities via the PR-G 160 route, which allows visitors to observe the intersection of freshwater and saltwater environments.