Zao Onsen
Zao Onsen is a famous hot spring area located on Mount Zaō in the northern part of Honshū, the main island of Japan. It is situated at an altitude of 880 meters above sea level and is known for its highly acidic sulfuric waters, which are among the most acidic in the entire country with a pH value close to 1.
The hot springs of Zao Onsen are renowned for their therapeutic properties and are often referred to as "Springs of Beauty" or "Hime-no-Yu" (princesses' bath) due to their reputed benefits for skin and health. The mineral-rich waters contain sulfur, iron, aluminum, sulfate, and chloride, giving them a characteristic smell of rotten eggs.
Zao Onsen serves multiple purposes:
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Hot spring resort: Visitors can enjoy various public baths, including outdoor baths (rotemburo) and traditional community baths.
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Ski resort: In winter, it transforms into one of Japan's leading ski resorts, allowing visitors to combine skiing with relaxing hot spring baths.
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Nature attraction: The area is famous for its "snow monsters" or "juhyo" phenomenon, where conifer trees become encrusted with snow and ice, creating unique formations visible in winter.
History and Popularity
The history of Zao Onsen dates back to 110 AD, with legends of its healing properties spreading since ancient times. Today, it remains a popular destination for both domestic and international tourists seeking relaxation, outdoor activities, and the unique experience of Japanese onsen culture.