 Situated on the occidental coast of the Peninsula of Setúbal, the territory is the result of ocean receding, covering an area of 10.18 km² between the water and main escarpment.The space is one large beach resulting from progressive decline from the east to the sea.Its coastal extent represents the largest contiguous beach in Portugal, with an expanse of approximately 30 kilometres, from the left margin of the Tagus River to the estuary of Albufeira.