Erupting about 15,000 years ago from three overlapping scoria cones, it formed a huge scoria mound with a central crater from the last eruption. SIGNIFICANCE Volcanoes are a conspicuous feature of the Auckland city landscape. In some cases their form is emphasized by their preservation as reserves...
Some believe that at the end of the Mesozoic era, there were volcanoes erupting, spurting out hot molten rock called lava. The lava and the poisonous dust and chemicals emitted out of the volcanoes blocked the sunlight making the Earth cold and killing most plants and animals. ...
There are altogether about 50 volcanoes, of which more than 10 are known to be active. Mount Pinatubo on Luzon, once regarded as extinct, was in 1991 the site of one of the world’s largest volcanic eruptions of the 20th century. All gradations of volcanoes can be seen, from the ...