Researchers have found that a mysterious type of iron-rich magma found within extinct volcanoes may be a rich ... are ...

Col. Fred G. Plummer has made extensive researches and collected data which shows beyond question that the big mountain peaks in the Northwest have been volcanoes in the memory of people yet ...

Though immensely powerful, volcanoes are not always spewing hot lava around. Many are considered dormant or even extinct and have ... other volcanoes around the world, with just a small number ...