Mount Ruapehu - National Park 5.97

4.7 star(s) from 128 votes
National Park, 3948
New Zealand
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About Mount Ruapehu

Mount Ruapehu Mount Ruapehu is one of the top rated place listed as Mountain in National Park ,

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Mount Ruapehu, or just Ruapehu, is an active stratovolcano at the southern end of the Taupo Volcanic Zone in New Zealand. It is 23km northeast of Ohakune and 23km southwest of the southern shore of Lake Taupo, within Tongariro National Park. The North Island's major ski resorts and only glaciers are on its slopes.Ruapehu, the largest active volcano in New Zealand, is the highest point on the North Island and has three major peaks: Tahurangi (2,797 m), Te Heuheu (2,755 m) and Paretetaitonga (2,751 m). The deep, active crater is between the peaks and fills with Crater Lake between major eruptions.Volcanic activityRuapehu is largely composed of andesite and began erupting at least 250,000 years ago. In recorded history, major eruptions have been about 50 years apart, in 1895, 1945 and 1995–1996. Minor eruptions are frequent, with at least 60 since 1945. Some of the minor eruptions in the 1970s generated small ash falls and lahars (mudflows) that damaged skifields.Between major eruptions, warm acidic Crater Lake forms, fed by melting snow. Major eruptions may completely expel the lake water. Where a major eruption has deposited a tephra dam across the lake's outlet, the dam may collapse after the lake has refilled and risen above the level of its normal outlet, the outrush of water causing a large lahar. In 2000, the ERLAWS system was installed on the mountain to detect such a collapse and alert the relevant authorities.

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