One of the many bubbling mud pools in a hot spring area on the outskirts of Hveragerdi, a geothermal hot spot, with steam rising from fumeroles right in the middle of town, South West Iceland, Polar Regions

hveragerdi iceland town hot spot geothermal plate tectonics volcanic vulcanicity hot springs hot spring energy renewable energy geothermal heat heat steam steaming mud mud pool bubbling minerals close up close ups nature natural world natural phenomena mud pools thermal areas polar regions day outdoors horizontal