Iberian Peninsula
Rivers

The major rivers flow through the wide valleys between the mountain systems. These are the Ebro, Douro, Tagus, Guadiana and Guadalquivir. All rivers in the Iberian Peninsula are subject to seasonal variations in flow.

The Tagus is the longest river on the peninsula and, like the Douro, flows westwards with its lower course in Portugal. The Guadiana river bends southwards and forms the border between Spain and Portugal in the last stretch of its course.
length_constraints:number_sentences[9], keywords:letter_frequency