Volcanoes present one of the most visibly fightening of natural foes. The earth explodes with red-hot molten rock, destroying villages and poisoning the landscape. Even more frightening are the volcanoes we can't see, that erupt amongst seeming peace only to wreak havoc. This video includes footage of unusual and disastrous volcanoes in West Africa, Phillipines and New Zealand, as well as Mt. Ranier in the north western United States.