[Jackknife]

Yikes! I watched that special on Krakatoa the other night. Scary.

I saw that. A very well recorded catastophic event.

[mainepatsfan]

The computer animation was excellent. Talk about global cooling!

[Mad_Tom_Rackham]

Krakatoa exploded when it's volcanic flank collapsed in to the partially emptied submarine caldera, allowing seawater to contact the magma, resulting in a massive steam explosion.

A simiar but far more masisve flank collapse occured on the Greek volcanic island of Thera (Santorin volcano) in 1650 BC. An estimated 15 cubic miles of seawater poured into the exposed submarine caldera. Tsunami inundation of nearby Crete exceeded 50 meters.

Earthquakes are bad news. But supervolcanoes are very bad news.