The two lakes, covering an area of 1300 and 370 m², are filled with the treasure of the Hohe Tauern mountains. Every day, 150 m³ of fresh thermal water bubbles into the lakes. Unique and pure, because they are cleaned without the addition of chemical substances such as chlorine. The water is actually kept pure using a biological filtration system. Anyone dealing with skin problems or allergies can enjoy swimming in the lake without giving it a second thought.