Linha do Douro
Linha do Douro is a railway in northern Portugal. For much of its route the line runs close to the Douro River, offering very scenic views of the river and valley. Trains on the line are operated by Comboios de Portugal (CP). Route. From west to east, the line runs from the junction at Ermesinde to Pocinho. The line formerly continued east for a further 28 kilometres to the Spanish border. Until 1984, the track continued onwards into Spain, thus allowing through trains to/from Salamanca. Passenger trains normally run from São Bento station in Porto to  Pocinho, with some not running as far as the eastern terminus. The line is built to the Iberian gauge of . The line is single track, apart from a double track section between Ermesinde and Valongo (the authorisation for the dualling work was given by CP in 1993). In 1984, the Spanish rail operator RENFE announced the closure of its connecting line from La Fuente de San Esteban to the Portuguese border. With the loss of international traffic, CP had to close its line east of Barca d'Alva to Spain. The service was cut back to Pocinho in 1988, which has  since remained the eastern terminus of the Douro line. Branch lines. There were formerly five metre gauge branch lines connecting with the Douro line, but the last of these closed in 2009. Geographically, from west to east they were: