Pohutu Geyser — The largest of several geysers within the Whakarewarewa valley. The Pohutu geyser erupts on average once or twice each hour and can reach heights of up to 30 metres (100 feet). Pohutu Geyser is a complex spring which discharges water in a cyclic manner. It is thought that a geyser requires an intricate plumbing system involving one or more chambers into which hot water, steam and gases are all fed. Eventually this reservoir becomes sufficiently pressurised and hot enough for the water to begin boiling. From the rapid and violent pressure within the chamber, water is forced up the geyser vent and then ejected into the air.
Location: Te Puia (Whakarewarewa), Rotorua, New Zealand. [S38 09.822 E176 15.034]
PhotoID: B_20110315_29047
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