The Arouca River is located in northern Portugal, flowing through the scenic Arouca Geopark. It is known for its clear waters and beautiful landscapes, making it a popular spot for outdoor activities such as hiking and kayaking. The river plays a vital role in the local ecosystem and supports various wildlife. The river is approximately 20 kilometers long and originates from the Serra da Freita mountain range. It eventually merges with the Paiva River, contributing to the region's rich biodiversity. The surrounding area is also famous for its geological formations and cultural heritage, attracting visitors from around the world.