From the sinister steaming swamps of Rotorua to the bubbling pools of Wai-O-Tapu, the breathe of our living planet can be seen in vibrant colour. New Zealand's north island is dotted with geothermal hotspots of bubbling mud, sulphur waterfalls, steaming vents and lakes of neon oranges, yellows and greens, coloured by the oxidization of various minerals including manganese and sulphur. Indigenous Maori tribes would mix these minerals with whale oil to paint their art work and buildings.