Clouds of steam rise as people swim in the Blue Lagoon thermal pool, Iceland

BlueLagoon thermal pool, Iceland

Clouds of steam rise as people swim in the Blue Lagoon thermal pool, Iceland

Bubbling mud pools in the geothermal area of Hverir near Myvatn, Northern Iceland, Polar Regions

Bubbling mud pools in the geothermal area of Hverir near Myvatn, Northern Iceland, Polar Regions

Bubbling mud pools in the geothermal area of Hverir near Myvatn, Northern Iceland, Polar Regions

Bubbling mud pools in the geothermal area of Hverir near Myvatn, Northern Iceland, Polar Regions

Strokkur geyser erupting, in the Geysir hot springs area, Haukadalur geothermal area, Southwest Iceland

Blue water pool, Bl√°hver hot spring, Hveravellir high-temperature or geothermal region, Highlands, Iceland, Europe

Blue water pool, Bl√°hver hot spring, Hveravellir high-temperature or geothermal region, Highlands, Iceland, Europe

Blue Lagoon geothermal spa, Iceland, Europe

Blahver, blue spring, the most beautiful blue water pool in Hveravellir in the Highlands, in front of Oeskjuholt, a steaming calc-sinter mound which looks like a mini volcano, below a rainbow, Hveravellir, Iceland, Europe

Blahver, blue spring, the most beautiful blue water pool in Hveravellir in the Highlands, in front of Oeskjuholt, a steaming calc-sinter mound which looks like a mini volcano, below a rainbow, Hveravellir, Iceland, Europe

Natural pool Grjótagjá, crevices, hot fountain, Reykjahlíð, Mývatni, Iceland, Europe

Blahver, blue spring, the most beautiful blue water pool in Hveravellir in the Highlands, in front of Oeskjuholt, a steaming calc-sinter mound which looks like a mini volcano, below a rainbow, Hveravellir, Iceland, Europe

Mud pool in the Namafjall geothermal area at Lake Myvatn in Iceland, Europe

Three Icelandic women with beer in the warm spring, hot pool, Landmannalaugar, Iceland, Europe

Hot, bubbling mud in a pool in the Gunnuhver geothermal area, Iceland, Europe

Blue Lagoon geothermal spa, Iceland, Europe

Myvatn Pool (Jarboein vi M˝vatn), Myvatn, northern Iceland, Iceland, Atlantic Ocean

Blue Lagoon geothermal spa, Iceland, Europe

Geothermal pool, Myvatn Nature Bath, Myvatn, Iceland, Europe

Blahver, blue spring, the most beautiful blue water pool in Hveravellir in the Highlands, in front of Oeskjuholt, a steaming calc-sinter mound which looks like a mini volcano, Hveravellir, Iceland, Europe

Myvatn Pool (Jarboein vi M˝vatn), Myvatn, northern Iceland, Iceland, Atlantic Ocean