Mondego River

The Rio Mondego or Mondego River is the longest river entirely within Portuguese territory. It has its source in Serra da Estrela, the highest mountain range in mainland Portugal . It runs 234 kilometres from the Gouveia municipality, at 1,425 metres above sea level in Serra da Estrela, to its mouth in the Atlantic Ocean next to the city of Figueira da Foz.Its etymology is believed to be a pre-Roman, Hispano-Celtic voice Munda or Monda , Latinised into Mundicus < Mondæcus until evolving into the present name.It flows through the districts of Guarda, Viseu and Coimbra, all in Centro Region. It flows near the towns of Celorico da Beira, Fornos de Algodres, Nelas, Tabua, Carregal do Sal, Mortagua, Montemor-o-Velho and cities of Seia, Gouveia, Guarda, Oliveira do Hospital, Mangualde, Santa Comba Dao, before crossing the town of Penacova, is narrow, then widens by the city of Coimbra , and the Montemor-o-Velho municipality , before reaching the Atlantic at the city of Figueira da Foz.

Wikipedia