Man-Made Geyser Adds Sparkle to the Pearl

In further homage to the magnificence of geothermal forces, an artificial geyser (38)________ outside the Pearl by the hot water tanks on Oskjuhlið. This is not a mechanical geyser but a completely “automatic” and sustainable creation, (39)________ on the same principles that cause natural geysers (40)_______ .

Superheated geothermal water at a temperature of 125°C, pressurized to prevent it from turning to steam, enters a steel pipe which is set 30 m vertically below the ground and measures 40 mm wide but tapers up to paved bowl on the surface. The pressure builds up and is finally released with the water and steam (41)________ every five minutes or so, whereupon the pipe gets refilled and the cycle (42)________ itself.