This eco-track runs along one of the most beautiful and old railway lines in Portugal. It connects the stations of Amarante and Arco de Baúlhe (Cabeceiras de Basto), going through Celorico de Basto, and it is almost 40 km long. On foot or by bike, it offers you exquisite views over the valley of the river Tâmega, its bridges, villages and other valuable heritage, such as the romanesque Church of Gatão, only a few meters away from the eco-track.