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A wide, elevated view of the Blue Lagoon in Iceland, showing its milky blue geothermal waters surrounded by dark volcanic lava fields and modern spa buildings under a clear sky.

Panoramic view of Iceland’s Blue Lagoon, where mineral-rich geothermal seawater from the nearby Svartsengi power plant fills soft, milky-blue pools set among black lava fields.

Where Does the Blue Lagoon Water Come From?