New Zealand volcano erupts

New Zealand government geological agency GNS Science issued a warning on Nov. 21 after Mount Tongariro on the North Island erupted. The volcano previously erupted in August this year, the first time in more than a century.

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Smoke billows out of Te Maari crater on Mount Tongariro, New Zealand after a brief eruption Wednesday, Nov. 21, 2012. The New Zealand volcano erupted with a brief blast of dark ash Wednesday, canceling flights but causing no significant damage. Schoolchildren and dozens of other hikers who were walking on trails along the mountain's base were safe. (AP Photo/GNS)
Smoke billows out of Te Maari crater on Mount Tongariro, New Zealand after a brief eruption Wednesday, Nov. 21, 2012. The New Zealand volcano erupted with a brief blast of dark ash Wednesday, canceling flights but causing no significant damage. Schoolchildren and dozens of other hikers who were walking on trails along the mountain's base were safe. (AP Photo/GNS)