Ruapehu is one of the world's most active volcanoes and the largest active volcano in New Zealand. It is the highest point in the North Island and includes three major peaks: Tahurangi (2,797 m), Te Heuheu (2,755 m) and Paretetaitonga (2,751 m). The deep, active crater is between the peaks and fills with a crater lake between major eruptions.
Tongariro National Park was the fourth national park established in the world. The active volcanic mountains Ruapehu, Ngauruhoe, and Tongariro are located in the centre of the park.
There are a number of Māori religious sites within the park and the summits of Tongariro, including Ngauruhoe and Ruapehu, are tapu (sacred). The park includes many towns around its boundary including Ohakune, Waiouru, Horopito, Pokaka, Erua, National Park Village, Whakapapa skifield and Turangi.