National Geophysical Data Center

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Teachers Guide to Stratovolcanoes of the World
Facts and Figures

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Nevado del Ruiz, Colombia:
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Location: Colombia
Latitude and Longitude: 4.88N 75.37W
Elevation: 5,389 m, 17,784 ft
Volcano Type: Stratovolcano
Earliest Eruption: 6660 BP
Oldest Historic Eruption: 1570
Most Recent Eruption: 1985; VEI = 3; 23,000 deaths
Number of Eruptions in 20th Century: 3
Largest Eruption: 1595 VEI = 4
Notable Feature: lahar (1845, 1985 eruptions)
Notable Statistic: second largest volcano-related disaster of 20th Century