Deildartunguhver and Hraunfoss

On either side of Reykholt are two remarkable water-related sights. Measured by the volume of water produced, Deildartunguhver is the largest hot spring in Europe. And Hraunfoss, or the “Lava Field Waterfall”, is precisely as strange as its name implies.

At Deildartunguhver, a massive amount of water super-heated at 97°C (207°F) is continuously pumped out of a terrifying crack that opened in the earth. The spring is powerful enough supply the hot water needs of both Borgarnes (34 kilometers aw...