Highway 4 passes National Park village, and in the east, State Highway 1, known for this stretch as the Desert Road, runs parallel to the Tongariro River. State Highway 47 joins these two highways to the north of much of the park, although it bisects the Pihanga Scenic Reserve. The southern link is State Highway 49. The North Island Main Trunk railway from Auckland to Wellington passes National Park village. Climate Like the whole of New Zealand, Tongariro National Park is situated in a temperate zone. The prevailing westerly winds gather water over the Tasman Sea. As the volcanoes of Tongariro National Park are the first significant elevations that these winds encounter on the North Island, besides Mount Taranaki, rain falls almost daily. The east–west rainfall differences are not as great as in the Southern Alps, because the three volcanoes do not belong to a greater mountain range, but there is still a noticeable rain shadow effect with the Rangipo desert on the Eastern leeward side receiving 1,000 mm of annual rainfall. At Whakapapa Village (1119 m) the average annual rainfall is about 2200 mm, in Ohakune (610 m) about 1250 mm and in higher altitudes, such as Iwikau Village (1770 m), about 4900 mm. In winter there is snow to about 1500 m. Temperatures vary dramatically, even within one day. In Whakapapa, they can fall below the freezing point all year round. The average temperature is 13 °C, with a maximum of 25 °C in summer and a minimum of -10 °C in winter. In some summers the summits of the three volcanoes are covered with snow; on top of Mount Ruapehu, snow fields can be found every summer and the summit is glaciated. History The mountain summits are of great significance to the local Māori. In 1886 in order to prevent the selling of the mountains to European settlers, the local Ngati Tuwharetoa iwi had the mountains surveyed in the Native Land Court and then set aside (whakatapua) as a reserve in the names of certain chiefs one of whom was Te Heuheu Tukino IV (Horonuku), the most significant chief of the Māori Ngati Tuwharetoa iwi. Later the peaks of Mount Tongariro, Mount Ngauruhoe, and parts of Mount Ruapehu, were conveyed to The Crown on 23 September 1887, on condition that a protected area was established there. This 26.4 km2 area was generally considered to be too small