Mt. Gas-san
Buses leave JR Tsuruoka Station and S-Mall in summer for the nearly two-hour trip (¥2,100) to the Gas-san Hachigo-me stop. Check schedules with the tourist information center as they change seasonally. From there you can hike three hours past the glaciers and wildflowers to the 6,500-foot summit of Gas-san, literally Moon Mountain—the highest of the three holy Dewa mountains. From the top you can see the whole gorgeous gallery of mountains that is Yamagata, including one called Mt. Chokai (also known as Dewa Fuji) for its perfect shape. There is even a temple at the top should the spirit take you. It's not possible to climb without snowshoes and winter gear from November to late April or May.