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Covering nearly 2800 km of windswept cliffs with strong tides, the Brittany coast offers a remarkable variety of landscapes : beaches, dunes, estuaries and rocky cliffs, witness of a rich geological past.


Some Geology

The coasts of Ille-et-Vilaine are typical of the Brittany coast. They consist of cliffs and sandy bays resulting from a long process of erosion.

The cliffs are made of granite, a very hard rock.

Over time, millennium after millennium, rainwater penetrates into the rock. Under the force of the waves, the rock fractures.

Blocks of stone break off and fall down below the cliff. There, the sea, assisted by the waves, will gradually split them into pebbles, gravel and sand. Lighter, this sand will be transported by currents and deposited on beaches in sheltered bays.




the breton ENVIRONMENT 


As part of the coherence of the regional policy on access and dissemination of the environmental information, the State and the Regional Council of Britain have opted to adopt a tool of community interest dissemination and valuation of environmental data on Britain: Britain GIP environment.

Breton Environment has made available a website portal on the environment in Brittany. It aims to facilitate data access and disseminate information to encourage knowledge of the environment.