The Gassan Mountain Range is located in the western part of Japan's Honshu island, primarily within Yamagata Prefecture. It is part of the larger Chūgoku Mountains and features several peaks, with Gassan being the highest at 1,984 meters. The range is known for its stunning natural beauty, including lush forests and diverse wildlife. The Gassan area is popular for outdoor activities such as hiking and skiing, attracting nature enthusiasts year-round. The region is also significant for its cultural heritage, with nearby shrines and historical sites that reflect the traditions of the local Yamagata community.