星尾集落中庭地区の山の中腹から湧き出る源泉は、地元では「塩水」と言われ、昭和２５年まで地域の銭湯として憩いの場所でした。源泉には稲荷神社（正一位）が祀られ、毎年お祭りも執り行われおりました。大正二年に記された古文書によれば、当時は不可思議な水として珍重され、飲めば胃腸病等に効いたとも書かれています。また、源泉は地下の鍾乳洞から湧いていると言われ、地上に湧き出てから石化され沢沿いに小池が形成されることから、この現象を石灰華段丘と言い、大変貴重なものです。長年かかって石化した崖の斜面には「石柱」も形成されています。
□ 温泉分析書
１.源泉名および湧出地・・・星尾温泉（源泉名：星尾の湯） 群馬県甘楽郡南牧村星尾字塩水1193湧出 ２.調査および試験者・・・一般社団法人 群馬県薬剤師会（環境衛生試験センター） 田島幸夫 ３.泉質・・・ナトリウム・カルシウムー炭酸水素塩・塩化物冷鉱泉（低張性性中性冷鉱泉） ４.浴用の適応症（効能） ・筋肉若しくは関節の慢性的痛み又はこわばり（関節リウマチ、変形関節症、腰痛症、神経痛、五十肩、打撲、 捻挫等の慢性期） ・運動麻痺於ける筋肉のこわばり、胃腸機能の低下（胃がもたれる、腸にガスがたまるな ど）、 ・軽傷高血圧、耐糖能異常（糖尿病）、軽い高コレステロール血症、軽い喘息又は肺気腫、痔の痛み 自律神経不安定症、ストレスによる諸症状（睡眠障害など）、病後回復期、疲労回復、健康増進、 ５.泉質別適応症・・・きりきず、抹消循環障害、冷え性、うつ状態、皮膚乾燥症
※詳細は各部屋に掲示しています。
Ingredients and effects of Hoshio Onsen
The spring that springs from the mountainside in the Hoshio village's central gardens is known locally as "salt water," and served as a local public bath and relaxation spot until 1950. An Inari shrine (ranked Shoichi) is enshrined at the spring, and an annual festival was held there. According to an ancient document written in 1913, the water was prized as a miraculous source, and drinking it was said to be effective against gastrointestinal ailments. The spring is also said to spring from an underground limestone cave, and once it emerges to the surface, it turns to stone, forming small ponds along the streams. This phenomenon, known as travertine terraces, is extremely valuable. Stone pillars have also formed on the cliff slopes that have turned to stone over the year
Hot spring analysis report
1. Name of source and location of spring: Hoshio Onsen (source name: Hoshio no Yu) 1193 Shiomizu, Hoshio, Minamimaki Village, Kanra District, Gunma Prefecture
2. Survey and tester: Yukio Tajima, Gunma Pharmaceutical Association (Environmental Hygiene Testing Center), General Incorporated Association
3. Spring quality: Sodium-calcium bicarbonate-chloride cold mineral spring (hypotonic neutral cold mineral spring)
4. Indications (effects) for bathing
- Chronic pain or stiffness in muscles or joints (chronic stages of rheumatoid arthritis, osteoarthritis, lower back pain, neuralgia, frozen shoulder, bruises, sprains, etc.) - Muscle stiffness in motor paralysis, decreased gastrointestinal function (stomach upset, gas buildup in the intestines, etc.) - Mild high blood pressure, impaired glucose tolerance (diabetes), mild hypercholesterolemia, mild asthma or emphysema, hemorrhoid pain, autonomic nervous system instability, various symptoms caused by stress (sleep disorders, etc.), recovery from illness, recovery from fatigue, health promotion,
5. Indications for different spring qualities: cuts, peripheral circulatory disorders, sensitivity to cold, depression, dry skin
*Details are posted in each room.
