(This is probably closer to 4.5 stars to me.) We went on Nature Connections' "Geothermal Wonderland Tour" and thought it was a thoroughly enjoyable tour! It was very cool to learn more about New Zealand's volcanic history and to see remnants/signs of that. And the sights -- a wonderful variety -- were beautiful, especially those at the Wai-O-Tapu Thermal Wonderland! You travel from place to place by van, but at each stop there's a lot of walking on paved and unpaved trails. All the paths are relatively straightforward; however, the unpaved or steep sections may not be great for those with difficulty walking though, as the park notes clearly. A wealth of information is available with (which I recommend) or without an outstanding guide. read more