Deildartunguhver, located near Kleppjárnsreykir in Borgarfjörður, West Iceland, is Europe’s most powerful hot spring, producing 180 litres of boiling water per second. Visitors can view the steaming geothermal landscape safely from designated platforms and enjoy bathing experiences at the nearby Krauma Geothermal Spa, which uses water directly from the spring. Notably, Deildartunguhver supplies hot water for heating towns up to 64 km away, making it vital for Icelandic infrastructure, and its geothermal energy also supports local greenhouse farming.