The Most Fatal Volcanos In History By Jonny Roser 79 BCE Mt Vesuvius Jun 8, 1784 Laki Volcanic System Location: Iceland, Deaths: 9350 1792 Mt Unzen Location: Indonesia, Deaths: 12 000-15 000 Apr 5, 1815 Mt Tambora Location: Indonesia, Deaths: 92 000 Aug 26, 1883 Mt Krakatoa Location: Indonesia, Deaths: 36 000 Apr 25, 1902 Mt Pelee Location: West Indies, Deaths: 40 000 Nov 13, 1985 Nevado del Ruiz