about 1650 Kilauea does an extremely big fissure outbreak in the decreased East Rift Zone (Kahawali eruption), likely linked to caldera collapse and subplinian explosive eruptions on the summit. At around the exact same time 1640-1660, inside the span of some twenty years or so, Mauna Loa does a number of four NERZ eruptions (two of them vital leng… Read More