The Satetsu River is a river located in the Kumamoto Prefecture of Japan. It flows through the region, contributing to the local ecosystem and providing water for agriculture and other uses. The river is known for its scenic beauty, attracting visitors who enjoy nature and outdoor activities. The Satetsu River is part of the larger Amakusa Islands area, which is famous for its rich history and cultural significance. The river supports various wildlife and is an important resource for the communities along its banks, playing a vital role in their daily lives and economic activities.