The Rio Najerilla is a river located in the northern region of Spain. It flows through the province of La Rioja and is a tributary of the Rio Ebro. The river is approximately 60 kilometers long and is known for its scenic landscapes and natural beauty. The Rio Najerilla is an important water source for the surrounding areas and supports local ecosystems. It is also popular for recreational activities such as fishing and hiking, attracting both locals and tourists who enjoy exploring its picturesque banks and the nearby Sierra de la Demanda mountains.