The Blue Lagoon is located 45 minutes outside of Reykjavik in the middle of a desolated lava field. Relaxing in this warm, glowing body of water, surrounded by the barron, subliminal landscape of Iceland is like taking a bath on Mars. The blue waters of these bubbly hot pools reach a comfortable 98-102 degrees. These waters come from deep within the earth, where they are heated to extreme temperatures before bursting to the surface. The bottom of the pool is now capped with a cement-like floor.this natural pool is composed of 65% sea water and 35% fresh water, rich in algae and silicon (the mineral that gives the lagoon its unusual turquoise colour). The temperature of the lagoon is around 30-35 ° C, and reaches 70 ° C in the vicinity of the geothermal plant, where the water is twice as salty as seawater.Drills are used to extract steam from the ground (from depths of over 2000 metres) to supply electricity and heating for the whole of Reykjanes peninsula and the city of Reykjavik.