'Lord of the Rings' volcano erupts in New Zealand

The dormant volcano erupted Monday night in a New Zealand national park, where many scenes from the 'Lord of the Rings' movies were filmed.

Ash from New Zealand's Mount Tongariro covers houses and farmland in this still image taken from video, August 7. A New Zealand volcano dormant for more than a century has spewed boulders and spread an ash cloud over the center of the country, disrupting air traffic but causing no other damage or injuries.

TV3 via Reuters TV/Reuers

August 7, 2012

A volcano quiet for more than a century erupted in a New Zealand national park, spreading thick ash for several miles and causing some residents to evacuate their homes. Some domestic flights were canceled Tuesday.

Mount Tongariro spewed ash and rocks for about 30 minutes late Monday night after a few weeks of increased seismic activity. It didn't cause any injuries or damage in the sparsely populated central North Island region. Tongariro National Park has three active volcanos, is a popular tourist destination and was the backdrop for many scenes in the "Lord of the Rings" movies.

Some residents left their homes as a precaution, and authorities temporarily closed roads. National carrier Air New Zealand canceled or delayed domestic flights to towns near the mountain, though by Tuesday afternoon, it said it was resuming service to locations where the ash cloud had cleared. No international flights were affected.

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Police said a witness to the eruption described flashes and explosions followed by a cloud of ash coming from a hole in the north face of the mountain. The Department of Conservation said three hikers were staying in a hut on the opposite slope of Mount Tongariro when it erupted but they walked out of the area safely.

Steve Sherburn, a volcanologist at the government agency GNS Science, said the eruption spread a layer of ash one or two inches thick for several miles. He said he'd heard reports of ash traveling on wind currents to coastal towns 60 miles away. He said the eruption was likely caused by steam pressure building within the mountain.

The nation's civil defense ministry said eruption activity was subsiding though it still urged caution for people who were in the vicinity of the volcano. The park has closed hiking trails and sleeping huts on the mountain for now.

New Zealand is part of the Pacific's "Ring of Fire" and has frequent geothermal and seismic activity. However, the last verified eruption of Mount Tongariro occurred in 1897, marking the end of a decade of volcanic activity.

Sherburn said it was too early to determine whether the latest eruption was the start of a renewed cycle of activity.