warbrick terraces at waimangu volcanic valley in new zealand

warbrick colorful aotearoa terrace silica nature valley thermal steam fumaroles mineral hydrothermal geothermic volcanic geology geothermal rock steaming zealand sulphur new hot tourism landscape hill island volcano summer north rotorua boiling environment active smoke heat blue scenery pool toxic surface lake poisonous turquoise waimangu shore cliff water outdoors orange