Deildartunguhver Hot Springs  -  2015

 They have a very high flow rate for a hot spring (180 litres/second).
 Water emerges at 100 °C.
Of all the hot springs in Europe, these have the greatest flow.

Most of the water is used for central heating in nearby towns.
If you take a shower anywhere within a 65 km radius of the spring, you will be bathing in the hot water from this powerful spring!
Some of the hot water is also used to heat hot-houses for growing vegetables.