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Amami Guntō NP, Kagoshima
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Local legend says Amami’s founding deities, Amamiko and Shinireku, descended on Yuwandake, still revered as sacred. The summit-side prayer clearing is Tarsa—“high place” in local speech—and holds a shrine built by islanders.
Amami asebi, a shrub found on the ridge between Yuwandake and nearby Jiwadake, was described as a new species in 2010. Later surveys confirmed just 2 wild plants; conservationists assembled a backup collection from 145 cuttings.
One insect has Yuwandake all to itself: Japan’s environment ministry lists Yuwan-sasakirimodoki as living only on this mountain, making its protected forest the species’ sole known home.
At 694 m, Yuwandake is the Amami Islands’ highest peak, yet its summit is a cloud belt: abundant rain and limited sunlight keep the air humid year-round, sustaining mosses, orchids and other rare life in old evergreen forest.
At 600 m, Yuwandake crosses a surprising climate line: subtropical evergreen forest gives way to warm-temperate summit flora, including Amami himekakara and Yakushima violet.
Wind keeps the mountaintop woodland low, but it holds 4 species of Symplocos, the sweetleaf genus. Kagoshima’s natural-history experts single out this concentration as a distinctive feature of Yuwandake’s summit forest.
Japan designated Kamiya-Yuwandake a national natural monument in 1968: the title links the mountain’s summit forest with Kamiya forest near Sumiyo Dam, two protected areas of Amami subtropical woodland.
Even boot soles matter here: Yuwandake’s community-agreed conservation rules ask visitors to check clothes for seeds and clean mud from shoes, helping keep outside plants from hitchhiking into its rare forest.
