Tagus River Estuary Full of Tan Sediments, Portugal38.7N 9.1W
The Tagus River appears as a dark brown line running southward across Portugal. It fills the Tagus River Estuary with tan colored sediments before spilling out into the Atlantic Ocean by the city of Lisbon, visible as a greyish tan area along the coastline.
Mainland Portugal is split by the Tagus, the country’s main river. The northern landscape is mountainous in the interior with plateaus indented by river valleys, whereas the south, that includes the Algarve and the Alentejo, features mostly rolling plains and a climate somewhat warmer and drier than in the north.