The Viru River is a river located in the northern part of Estonia. It flows through the Viru region, which is known for its natural beauty and diverse ecosystems. The river is approximately 50 kilometers long and is a tributary of the Gauja River. The Viru River is significant for its role in local agriculture and wildlife. It provides water for irrigation and supports various species of fish and birds. The surrounding area is popular for outdoor activities, including hiking and birdwatching, making it an important natural resource for both residents and visitors.