Ah Rotorua. You sure smell bad. At the start at least. But you have some damn fine geothermal activity.
We visited Wai-o-tapu Thermal Wonderland today, and saw geothermal pools sculpted from thousands of years of volcanic activity, in dozens of bright colours from the many different mineral deposits. Wai-o-tapu has the largest terraces and is the most diverse volcanic area in the Taupo Volcanic Zone.