This steamy pool is located in a large area of surface thermal activity in the Taupo Volcanic Zone. It is a 700 year old explosion crater formed by a hydrothermal eruption. The diameter is 65 meters with a depth of 62 meters, making it the largest hot water spring in the district. The water would not be good for a nice swim. The temperature of the pool starts at 230 degrees Celsius and cools to around 74 degrees Celsius. Besides these scorching temperatures, the water is acidic with a pH of 5.4. All along the surface bubbles of carbon dioxide are released. By taking a closer look at the pool, you will notice this orange colored solid along the sinter edge. This is made up of arsenic and antimony. Gold, silver, mercury, sulphur and thallium are also found in the steamy water.
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