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JAPAN’S NATIONAL HOLIDAY MOUNTAIN Day

22.10.2025
Natural History

Report and photo by Yuko Saito October 4, 2025 – Autumn Colors and Late Blossoms on the Northern Slopes of Mt. Chōkai

On this day I explored the Akita side of Mt. Chōkai, walking from the mid-slopes down toward the foothills, including the Ryūgahara Marsh at Harai River and the Nikaho Highlands. At these lower elevations the autumn foliage is only just beginning. To my delight, I also came across a gentian-like flower, Swertia japonica (commonly known as Senburi), blooming late in the season.

Late-blooming Japanese Gentian
Sanguisorba tenuifolia var. alba
A view of Mount Chōkai from Haraigawa
the autumn foliage of maples
Autumn leaves of Viburnum
Silver grass swaying with Mount Chōkai beyond
Ryūgahara Marsh
Swertia japonica (commonly known as Senburi)

Mount Chokai :Rising above the Sea of Japan coast, Mount Chōkai (2,236 m), lying on the border of Akita and Yamagata Prefectures, is a sacred volcano admired for its graceful, Fuji-like shape. The mountain is home to a rich ecosystem, from alpine flowers to colorful forests in autumn, and offers seasonal landscapes along with a cultural heritage that continues to inspire visitors.

#Mount Chokai

#Akita Prefecture

#Yuri Honjyo Municipality

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