The Akigami Onsen Ryokan, a solitary, traditional Japanese inn in the mountains, began producing the "Subzero Forest" in 1971,
taking advantage of temperatures dipping below negative 10 degrees to create a winter tradition.
The ice forest created by spraying water on the trees is blue
in the day, and when illuminated at night, visitors will be dazzled by the mystical sight created.
1 January to 31 March