In the south of Krabi province in Klong Thom district (around 70km from town and near the Khao Phra Bang Khram Nature Reserve), are nature’s own hot-tub jacuzzis, known as น้ำตกร้อน (nam tok rawn) in Thai. The water here comes from thermal springs, originating deep underground in volcanic chambers. Located in the jungle, this site features naturally hollowed-out ‘bathtubs’ in the smooth stone, filled to the brim with fresh running spring water at a pleasant 35-42C. After a soak, take a refreshing dip in the cool river below.Due to the popularity of the springs, water from the source has also been diverted into larger man-made bathing pools on the same site and basic changing facilities are now available for visitors. The mineral salts contained in the hot spring water are said to ease a number of ailments, including rheumatism, sciatica and skin complaints. Although these medical claims are unproven, the effect of simply lazing in hot water up to your chin, watching the clouds go by, certainly has positive health benefits.