Geyser is a hot spring and erupt from earth, there is pressure and water jet visible in air. They erupt many times in a day and duration may vary . There are 220 hot springs in New Zealand presently 58 are active. Temperature of Geyser exceeds water boiling point, i,e 100 deg C. The Lady Knox Geyser is a geyser in the Waiotapu area of the Taupo Volcanic Zone in New Zealand. Waimangu Geyser is the tallest Geyser of New Zealand and erection was 1500 ft. In Rotorua, there are Geysers and mud pool. A nice place to visit.