最上川 (Mogami River) is a prominent river located in Yamagata Prefecture, Japan. It stretches approximately 228 kilometers and is known for its scenic beauty, flowing through mountainous regions and valleys. The river is an important waterway for transportation and has historical significance, particularly during the Edo period. The river is also famous for its Mogami River Boat Tours, which offer visitors a chance to experience the stunning landscapes and traditional culture of the area. Additionally, the surrounding region is rich in wildlife and offers various recreational activities, such as fishing and hiking along its banks.