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There are two mystery volcanic eruptions that took place in the mid 1400s being the 1452/1453 mystery eruption and 1458 mystery eruption. By 2013, the time frame had to be re-evaluated because previous ice core work had poor time resolution so there are references to a 1465 mystery eruption based on work a decade earlier. The poor time frame led some to assume a date in the 1460s and was connected to the unusual atmospheric events during the 1465 wedding of Alfonso II of Naples. The exact location of either eruption is uncertain, but both have been assigned at times to the submerged caldera of Kuwae in the Coral Sea. There is evidence otherwise for both eruptions with northern hemisphere emphasis being against the 1452/3 date and composition studies being against the more recent date. The eruption is believed to have been VEI-7 and possibly even larger than Mount Tambora's 1815 eruption.