Eventi catastrofici lungo le pendici andine della Cordigliera Centrale in Colombia

In Colombia in the late twentieth century there were two events that we call ''catastrophic'' when compared with many other cases too easily regarded as ''exceptional.'' These two events occurred in the center of the country in the region of Tolima, with the eruption of the volcano Nevado Ruiz and the consequent destruction of the town of Armero (1985) and again with the earthquake, January 1999, in Armenia has destroyed the capital Department of Quindio. The paper will analyze these two events have been an important development opportunity for the affected regions.