Yamagata
Japan
The Yamagata Zao Onsen Ski Resort (, Yamagata Zaō Onsen Skī-jō) is the largest ski resort in Tōhoku region, Japan, operated by Zao Onsen Tourism Association (, Zaō Onsen Kankō Kyōkai). The resort is mostly famous for its ski slopes in winter, but trekking is also popular sports in summer season.
Data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).