Explanation
The Sar River has 42 kilometres long. It starts in the Parroquia de Bando (Santiago de Compostela) and it finishes in the Ulla River (Padrón). It goes throw all the Coruña Province. Its trivutaries are the Sarela, the Roxos, the Tinto and the Rois. We are studying since the river passes through bertamirans to where the mills are. In total there are 3.92 km although the walking path is 5.22 km. It is a rural, inland landscape. There are a lot of fields around. There are also the most of the old houses of Bertamirans next to the river, because now the most of the houses of Bertamirans are new.