Oku Daisen

Large Photo:Fields of Japanese silver grass in Kagamiganaru
Large Photo:A starrry sky in Kagamiganaru
Large Photo:A view from Mt. Zoyama
Click on the following three photos to enlarge. Please select the photo you want to see.

Nature and History

Oku Daisen is a highland plateau on the south side of Mt. Daisen, surrounded by beech forests. One section of the plateau, known as Kagamiganaru, supports a rare example of a high-elevation wetland. This marsh, located at 920 m elevation, is fed by water flowing down from Mt. Karasugasen (1448 m), Mt. Zoyama (1085 m), and Mt. Giboshi (1110 m). Alongside the marsh are grasslands that are home to a variety of wildflowers, including fields of Japanese silver grass (Miscanthus sinensis), that in autumn turns the area into a shimmering silver sea. The water of Oku Daisen is naturally filtered and purified as it seeps through the beech forests, and it serves as the region’s water supply. Since 1974, restoration projects have been carried out to revitalize the wetlands.


The high elevation and open aspect of the Oku Daisen area make it one of the best places to watch the stars at night. Visitors can stroll and camp in dense natural forests at an elevation of 920 m or hike up Mt. Zoyama and Mt. Giboshi, which take about 30 minutes to hike. In winter the slopes make for excellent skiing.


Kagamiganaru takes about one hour and 10 minutes to reach from Yonago Airport by car. Or it takes about 30 minutes from Yonago Airport to Yonago Station by bus or train and about 50 minutes from Yonago Station by car.