Located in Reykholtsdalur in West Iceland is the most powerful hot spring in Europe. Deildartunguhver has a very high flow rate for a hot spring, about 180 liters of 100°C hot water flows from a crack in the ground every second, which is the highest in Europe.
Deildartunguhver is the main source of hot water for the towns Borgarnes and Akranes. Nearby greenhouses use the geothermal heat to grow tomatoes which are for sale near the hot spring and the hot spring is also used to bake icelandic bread called rúgbrauð. It takes about 24 hours to bake the bread.
The hot spring is located about 1 hour and 20 minute (98 km) drive from Reykjavík. Take Ring Road nr. 1 towards Borgarnes and then road nr. 50 and drive for about 25 minutes.
Read more about Driving in Iceland.