Soyuz was taken out of service in 1991.
The Pink Terrace , or Te Otukapuarangi -LRB- `` The fountain of the clouded sky '' -RRB- in Maori , and the White Terrace , also known as Te Tarata -LRB- `` the tattooed rock '' -RRB- , were natural wonders of New Zealand .. They were reportedly the largest silica sinter deposits on earth .. sinter. sintering#Natural sintering in geology. Until recently , they were lost and thought destroyed in the 1886 eruption of Mount Tarawera , while new hydrothermal attractions formed to the south-west i.e. Waimangu Volcanic Rift Valley .. eruption of Mount Tarawera. eruption of Mount Tarawera. Waimangu Volcanic Rift Valley. Waimangu Volcanic Rift Valley. The Pink and White Terraces were formed by upwelling geothermal springs containing a cocktail of silica-saturated , near-neutral pH chloride water .. These two world-famous springs were part of a group of hot springs and geysers , chiefly along an easterly ridge this year named Pinnacle Ridge -LRB- or the Steaming Ranges by Mundy -RRB- .. The main tourist attractions included Ngahapu , Ruakiwi , Te Tekapo , Waikanapanapa , Whatapoho , Ngawana , Koingo and Whakaehu .. The Pink and the White Terrace springs were ~ 1200 meters apart .. The White Terrace was at the north-east end of Lake Rotomahana and faced west to north west at the entrance to the Kaiwaka Channel .. Lake Rotomahana. Lake Rotomahana. Te Tarata descended to the lake edge ~ 25 metres below .. The Pink Terrace lay four fifths of the way down the lake on the western shore , facing east to south-east .. The pink appearance over the mid and upper basins -LRB- near the colour of a rainbow trout -RRB- was due to antimony and arsenic sulfides , although the Pink Terrace also contained gold in ore-grade concentrations .. rainbow trout. rainbow trout