Fodor's Expert Review Gas-san
Buses leave JR Tsuruoka Station at 6, 7, 10:15 and 12:46 in summer for the nearly two-hour trip (¥1,560) to the Gas-san Hachigo-me stop. From there you can hike three hours past the glaciers and wildflowers to the 6,500-foot summit of Gas-san, or 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 Dewa Fuji (after Mt. Fuji) for its perfect shape. There is even a temple at the top should the spirit take you. Although the mountain is never closed, it's not possible to climb it without snowshoes and other gear from November to late April or May.