section_path: Geography
section_name: Geography
paragraph_text: Geography
  
  Portugal occupies an area on the Iberian Peninsula (referred to as the continent by most Portuguese) and two archipelagos in the Atlantic Ocean: Madeira and the Azores. It lies between latitudes 30° and 42° N, and longitudes 32° and 6° W.
  
  Continental Portugal is split by its main river, the Tagus, that flows from Spain and disgorges in the Tagus Estuary at Lisbon, before escaping into the Atlantic. The northern landscape is mountainous towards the interior with several plateaus indented by river valleys, whereas the south, including the Algarve and the Alentejo regions, is characterized by rolling plains.
  
  Portugal's highest peak is Mount Pico on Pico Island in the Azores. The archipelagos of Madeira and the Azores are scattered within the Atlantic Ocean: the Azores straddling the Mid-Atlantic Ridge on a tectonic triple junction, and Madeira along a range formed by in-plate hotspot geology. Geologically, these islands were formed by volcanic and seismic events. The last terrestrial volcanic eruption occurred in 1957–58 (Capelinhos) and minor earthquakes occur sporadically.
  
  The exclusive economic zone, a sea zone over which the Portuguese have special rights in exploration and have use of marine resources, covers an area of 1,727,408 km 2 (666,956 sq mi). This is the 3rd largest exclusive economic zone of the European Union and the 20th largest in the world.