Scientists are now watching to see whether the volcano repeats the violent eruptions of 1963, when superheated gases and volcanic material raced down the mountain in a series of pyroclastic flows, killing more than 1000 people. (sciencemag.org)
The maroon patch within the baby - blue area at the center of the crater signifies what has been identified as pyroclastic deposits centering on a volcanic vent. (discovermagazine.com)
The combined effects of pyroclastic flows, volcanic ashes and tsunamis had disastrous results in the region. (sciencedaily.com)