Arnakkekilden. Every 24 hrs 750,000 litres of water flow into the Lake Ørnsø. The rich water flow of the Spring Arnakkekilden was a contributing factor, when a group of doctors and locals managed to create the basis of a water based and health-giving health-resort on this very site in 1883. Taste the cold water At their leisure guests in the park can taste the water flowing from the well. They will also note the temperature of the water, which is constant and chilly 7° degrees centigrade. In spite of the reddish appearance of the spring water, the water is drinkable. It has a special taste, and it is high on minerals like iron, calcium and sodium. The iron is clearly visible because it precipitates ochre, colouring the surroundings reddish-brown.