

Fire fountaining eruptions from the summit crater have produced lava flows in 1870, February 1949, and May-September 1954.
The most recent eruption at Ngauruhoe was in February of 1977.
McClelland, L., Simkin, T., Summers, M., Nielsen, E., and Stein, T.C., 1989, Global Volcanism 1975-1985: Englewood Cliffs, New Jersey, Prentice Hall, 655 p.
Simkin, T., and Siebert, L., 1994, Volcanoes of the World: Geoscience Press, Tucson, Arizona, 349 p.
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