The Aven River is a small river located in the region of Brittany, France. It flows through the picturesque town of La Roche-Bernard before emptying into the Gulf of Morbihan. The river is known for its scenic beauty and is popular for recreational activities such as kayaking and fishing. The Aven River is approximately 30 kilometers long and features a mix of freshwater and tidal influences. Its banks are lined with lush vegetation, providing a habitat for various wildlife species. The river plays a significant role in the local ecosystem and contributes to the area's charm and natural landscape.