Deildartunguhver is a hotspring in Reykholtsdalur

Reykholt

There are two villages with this name in Iceland:-Reykholt :The village is situated in the valley of the river Reykjadalsá, called Reykholtsdalur....

, Iceland

Iceland

Iceland , described as the Republic of Iceland, is a Nordic and European island country in the North Atlantic Ocean, on the Mid-Atlantic Ridge. Iceland also refers to the main island of the country, which contains almost all the population and almost all the land area. The country has a population...

. It is characterized by a very high flow rate for a hot spring (180 liters/second) and water emerges at 97 °C. It is the highest-flow hot spring in Europe.

Some of the water is used for heating, being piped 34 kilometers to Borgarnes

Borgarnes

Borgarnes is a town located on a peninsula at the shore of Borgarfjörður in Iceland.It has a population of 1,763 . The town is located 60 km north of the capital Reykjavík and is connected to other places in Iceland through the second largest bridge in Iceland, Borgarfjarðarbrú...

 and 64 kilometers to Akranes

Akranes

Akranes is a port town and municipality located on the west coast of Iceland.It is the ninth most populous town in Iceland after Mosfellsbær and Árborg with a population of 6,623 people...

.

A fern called the "deer fern" or "hard fern", Blechnum spicant

Blechnum spicant

Blechnum spicant is a species of fern known by the common names Deer fern or hard fern. It is native to Europe and western North America. Like some other Blechnum it has two types of leaves...

, grows near Deildartunguhver. This fern grows nowhere else in Iceland.