These photos are from the Wai-O-Tapu geothermal park just outside of Rotorua, New Zealand. It was taken on my recent visit. New Zealand is famous for thermal activity such as geysers, mud pools, sulfur steam vents, volcanos, and of course earthquakes. Though many of these phenomena occur all over New Zealand, one of the highest concentrations of such activity is around Rotorua, in the North Island. Many such areas are open to the public.
Minerals in the boiling pools create beautiful colors.