Pihanga is located in North Island

Mount Pihanga is a 1325m volcanic peak in the North Island Volcanic Plateau, located to the north of Mount Tongariro, between Tongariro and Lake Taupo. Lake Rotoaira lies immediately to the west of Pihanga, and the smaller Lake Rotopounamu is at the north-west foot of the mountain. Mt. Pihanga and Lake Rotopounamu are part of the 5,129ha Pihanga Scenic Reserve, which in 1975 was added to the Tongariro National Park.

• http://en.wikipedia.org/wiki/Pihanga