The River Aller is a tributary of the River Loire in central France. It flows through the region of Auvergne-Rhône-Alpes and is known for its picturesque landscapes and natural beauty. The river is approximately 50 kilometers long and plays a vital role in the local ecosystem. The River Aller is popular for various recreational activities, including fishing and hiking along its banks. Its waters support diverse wildlife, making it an important habitat for many species. The river also contributes to the agricultural practices in the surrounding areas, providing irrigation for local farms.