關子嶺溫泉位於臺灣臺南市白河區，為臺灣著名溫泉，其泥漿泉更為罕見，當地設有「關子嶺溫泉風景區」，距新營市中心大約20公里。可從新營車站轉乘大台南公車，方可到達。關子嶺溫泉開發甚早，早在日治時期即與四重溪溫泉、北投溫泉、陽明山溫泉並列臺灣四大溫泉。四周有枕頭山、虎頭山等群峰環抱。關子嶺溫泉最大特色是黑濁泥狀的泉水，含有豐富礦物質,是全台唯一的泥漿溫泉，極為珍稀。臺灣話「高」（白話字：kôan）音近「關」（koan），「關子嶺」（kôan-a-niá）實為「高嶺」之訛變。關子嶺風景以關子嶺溫泉區為起點，沿途有火王爺廟、火山碧雲寺、白河大仙寺、紅葉公園、水火同源等休憩玩賞地點。（週六日及國定假日可搭乘大台南公車黃12-2關子嶺環狀線，暢遊關子嶺各大景點）鹼性碳酸泉，泉質潤滑帶有硫味，溫度約為75℃間，多為泥漿，故不可飲。洗後全身舒暢，皮膚紅潤光潔，傳言對於皮膚過敏、消除疲勞、美容、胃腸慢性病及風濕關節炎和香港腳均具有相當療效。
座標 Coordination
N24 59.097 E121 32.451
The Guanziling Hot Spring area was the first developed around the turn of the 19th century. It is said that the springs were discovered at that time by Japanese troops stationed in Chiayi. The first hot spring inn, Yoshidaya (now the Reikei Hot Spring Resort), opened in 1902 and quickly thereafter the area became known for its rare mud springs. Even the crown prince and other members of the Japanese nobility counted Guanziling among their favorite hot spring sites. After a period of decline, Guanziling has regained its prominent place on Taiwan's hot spring map in recent years. Today there are plenty of different types of hot spring spas here to choose from. The hot springs at Guanziling are fed by turbid mineral-rich water that is said to enhance both beauty and health. A number of large-scale hot spring spas have opened here in recent years to cater to the growing ranks of hot spring bathers. Apart from the springs, visitors can head to the lotus farms in nearby Baihe District, further adding to the allure of this popular destination. Guanziling Hot Spring (Chinese: 關子嶺溫泉; pinyin: Guānzilǐng Wēnquán; Wade–Giles: Kuan1-tzu1-ling3) is a hot spring in Tainan, Taiwan. The hot spring is located at an altitude of 270 meters above sea level.[1] This rare spring releases methane, which has been burning constantly for around three centuries.
cited from wiki, 交通部觀光局