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The Pointe de Corsen is the westernmost point of continental France, located west of Brest in the Plouarzel Commune, Finistère, Brittany. The nearest village is Ruscumunoc. 
A CROSS sea monitoring site is located at the point. Pointe de Corsen is located at 48°24′52″N 4°47′40″W 
31m above sea-level, it marks the theoretical boundary between the English Channel and the Atlantic Ocean, and offers a wide view of the Chenal du Four. Near the point you'll find Trézien lighthouse, unusual for its location, which is nearly 1km inland, offering spectacular views over the Finistère coastline.