Largest dunes in Cantabria
The Dunas de Liencres were declared a Natural Park in 1996 and cover a total area of 256 hectares.
They’re only about 15 km from Santander, just to the left of the mouth of the Pas River in the Ría de Mogro. You can get there via the CA-231 regional road that connects Liencres with Boo of Piélagos.
This Nature Reserve is one of the largest systems of dunes on the Cantabrian coast and is home to rich fauna (aquatic and migratory birds, lizards, snakes, amphibians, newts, etc.) and plant life including dune pines and other species that have adapted to live in the sand.
In addition, there is a sandy jetty 2km long that separates the two beaches of Valdearenas and Canallave. The first is quite long (2.8km), and has fine golden sand. Canallave measures 220m and is very windy with choppy seas that make it very popular among surfers.