The Deadly Eruption of Galeras, Columbia Jan 14, 1993 Posted by agimarc on 2021-02-01 Posted in: America C & S, Volcanoes. Tagged: amplitheater, Caldera, Carnegie Ridge, decade volcano, Dome, equipment, Galeras, Nazca Plate, Pasto, tornillo, vulcanian. Leave a comment Breached caldera and active cone at Galeras looking to the south. Image courtesy LeChaudron de Vulcain, Oct 2019 Continue Reading