The Mývatn Nature baths first opened in 2004 offering a natural bathing experience in the tranquil environment of Lake Mývatn. The nature baths offer a unique bathing experience leaving visitors completely relaxed after soaking in the mineral-rich waters. Interesting steam baths located directly on top of a geothermal vent where steam rises from the floor can be utilized in the bathing area. Visitors can enjoy a rejuvenating bath in the lunar like setting after a day of exploring the Lake Mývatn area. The water for the lagoon runs through a pipe, straight from a borehole at the nearby Bjarnarflag. The water is about 130°C when it arrives at the man made lagoon. The lagoon contains around 3.5 million liters of water at a temperature of 36 – 40°C. The bottom of the lagoon is covered by gravel and sand. The water contains a large quantity of minerals and due to the chemical composition, bacteria does not thrive in the lagoon so the use of chlorine is or other disinfectant is not needed. Among the minerals in the water is sulphur so it should be avoided to take any jewlery made of silver or brass into the water. These metals will turn black due to the sulphur. On the other hand, the sulphur is considered beneficial for human skin. There are changing rooms with lockers where guests can put their belongings, and at the Baths that can accommodate up to 400 people at the time. There are also showers where all guests are required to shower and wash carefully before entering the baths.