The four seasons of UnzenImage
The four seasons of UnzenImage
The four seasons of UnzenImage
The four seasons of UnzenImage
The four seasons of UnzenImage
The four seasons of UnzenImage
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Unzen in winter

The four seasons of Unzen

Nagasaki Unzen
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Winter in Unzen with Silver thaw
Silver thaw appear during the harsh winter season from December to March in areas above 1,100 meters such as Nita Pass, Myoken-dake, Kunimi-dake, and Fugen-dake. On particularly cold days, silver thaw can be seen throughout the area for about 10 to 12 days each month.
Several decades ago, when the cold was severe, silver thaw could be seen even in the hot spring town, but in recent years the frequency of seeing hoarfrost has decreased, perhaps due to global warming.
Silver thaw are ice crystals that form on the branches of trees blown by the north wind. They are formed by winter pressure systems, with west high and east low, clouds, fog, and other factors occurring below freezing. Locally, they are also called "hanabouro" and are loved by the residents. By the way, "jyuhu" seen in the Zao region of Tohoku is different from the silver thaw of Unzen; it is formed when snow sticks to the branches and freezes (snowballs).


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The Unzen Oyama Information Center

Unzen City, Nagasaki Prefecture  Certification badge

The Unzen Oyama Information Center is a facility that provides a wide range of information about the attractions of Unzen, including natural information, historical introductions, and exhibits on hot springs. We have the latest information to help you enjoy and appreciate Unzen more deeply, so please stop by here when you arrive in Unzen. Let's obtain the necessary information about nature, history, mountain climbing, transportation, and embark on a fun fieldwork. Please be sure to experience and enjoy the deep nature and history of Unzen!

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