The most popular track in Tongariro National Park is the Tongariro Alpine Crossing. Most of the track is also part of the Tongariro Northern Circuit, a two- to four-day tour, which is one of New Zealand's nine Great Walks. Side trips to the summits of Mount Tongariro and Mount Ngauruhoe are possible on these tracks. Another route is the three- to six-day Round the Mountain Track around Mount Ruapehu. Besides these, there are numerous shorter tracks appropriate for day tramps. With this track net, three camp sites, two emergency shelters, nine public and four private huts and the facilities in Whakapapa, the park is well developed for tourism. These tracks also serve as winter routes, as well as the track to the summit of Mount Ruapehu. Rock-climbing is also an option.