Río Deva is a river located in northern Spain, primarily flowing through the region of Asturias. It originates in the Picos de Europa mountain range and travels approximately 37 kilometers before emptying into the Cantabrian Sea. The river is known for its clear waters and scenic landscapes, making it a popular spot for outdoor activities like fishing and kayaking. The Deva Valley, through which the river flows, is characterized by lush greenery and diverse wildlife. The river also serves as a natural border between Asturias and Cantabria. Its surrounding areas are rich in cultural heritage, with several towns and villages that reflect the region's history and traditions.