Lake Taupō was formed about 26,500 years ago by the massive Ōruanui eruption. This threw out 1,000 times more pumice and ash than Mt St Helens (United States) did in 1980. The latest Taupō eruption, in about 232 CE, was much smaller than Ōruanui. Even so, it was several times larger than the 1883 eruption of Krakatau (Krakatoa) in Indonesia.
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