Waiotapu is an active geothermal area on the North Island of New Zealand. It’s not far from the city of Rotorua which is also known as Sulphur City due to the high geothermal activity in this region. Actually at about 58.000 people are living there. Waiotapu, however, is Māori and means sacred waters. Visitors can find several hot springs, sinkholes and fumaroles in this area. The most significant of them can be found within Waiotapu Thermal Wonderland. To access this enclosed area it is necessary to pay an admission fee. Champagne Pool and Lady-Knox-Geyser are the highlights of Waiotapu Thermal Wonderland. Lady-Knox-Geyser is induced daily to erupt at 10:15 am by putting soap into the opening vent. The jet of water caused by the eruptions reaches up to 20 metres and can last for over an hour.