1947 Isahaya Rain and Madslide vs 1888 Ritter Island

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On the morning of March 13, 1888, an explosion took place on Ritter Island, a small volcanic island in the Bismarck and Solomon Seas, between New Britain and Umboi Island. This event is the largest volcanic island sector collapse in recent history.The explosion resulted in the almost complete loss of the island and generated a tsunami with runups of up to 20 meters (66 ft) that caused damage more than 600 kilometers (370 mi) away and killed anywhere between 500 and 3,000 on neighbouring islands, including scientists and explorers.