At Bordeira Beach, the black schist gives way to a limestone cliff in light, warm colours. The extensive dune system stretches inland from the beach all the way to the hamlet of Carrapateira and along the Bordeira Stream, occasionally forming a lagoon of tepid water close to the mouth, where otters can still be spotted. Also worthy of note are the sand dune systems covered with stone pines. Some of these massive trees are used for farm storage, given the diameter of their canopies. The beach is enormous, over 3 km in length, and is very exposed to the sea winds. The Bordeira cliffs are famed for their almost inaccessible fishing grounds, much sought-after by the various sea birds that find shelter here. A network of walkways runs alongside part of the bank of the stream up to the viewpoints and down from the cliff top to the sands.