Río Caudal is a river located in the northern region of Spain, specifically in the province of Asturias. It flows through the picturesque landscapes of the Picos de Europa mountains and is known for its clear waters and scenic beauty. The river is a tributary of the Río Nalón, contributing to the region's rich biodiversity. The river is popular for various outdoor activities, including fishing, kayaking, and hiking along its banks. Its surrounding areas are home to diverse flora and fauna, making it an attractive destination for nature enthusiasts. The Río Caudal plays a significant role in the local ecosystem and economy.