Overlooking the so-called “Terras da Costa”, the approximately 13 km of this area of protected landscape, between Cova do Vapor (Costa da Caparica) and Lagoa de Albufeira, are a set of beautiful erosion forms, with high geological and paleontological interest. There, traces of living beings can be found, namely of plant origin. In areas adjacent to the cliff (pine forests of Medos and Aroeira) we can find some typical flora of the area.

The Tagus River flows into the beautiful Tagus estuary, after traveling 875 km from the Serra de Albarracín. The estuary is a place well known for the passage of migratory birds. One of the few terrestrial accesses can be made near Porto Alto (in Reta do Cabo).