Two hikes at parks costing $5 and $7 respectively were Waitopo and Waimunga. I spent a little over an hour at each place. The geothermal parks were fascinating with colors of purple, green, orange and more. Signs indicated the mineral each color was. Some, like devils hole had no water but instead was a completely yellow tunnel with steam venting.Champagne pool, on the other hand, was deep green in the center and orange near the edges.
There were boiling mud pools and large steam vents. One particulary large one shot straight up in air quite high on nearly and hourly basis.
The city of Rotura has steam coming up from the drains in the gutters and a large park in the middle of town with huge rocks, a pool and steam coming up from lots of nooks and crannies.