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Scientists Identify Third-Largest Eruption in Earth’s History

Scientists Identify Third-Largest Eruption in Earth’s History

The Palouse River cliffs were created by lava flows over 16 million years ago. HowStuffWorks looks at the third-largest eruption in history.


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  • Carlsbad Caverns National Park. National Park Service.http://www.nature.nps.gov/geology/parks/cave/
  • Gunung Mulu National Park. Forest Department of Sarawak, Malaysia.http://www.forestry.sarawak.gov.my/forweb/np/np/mulu.htm
  • Lovgren, Stefan. "Giant Crystal Cave's Mystery Solved." National Geographic News. April 6, 2007.http://news.nationalgeographic.com/news/2007/04/070406-giant-crystals.html
  • Mammoth Cave National Park. GORP.http://gorp.away.com/gorp/resource/us_national_park/ky_mammo.htm
  • Mammoth Cave National Park, Kentucky. U.S. World Heritage Sites. National Park Service.http://www.nps.gov/history/worldheritage/mammoth.htm
  • Mulu Caves (Gua Mulu) in Sarawak, Malaysia. Malaysia Central.http://www.malaysiacentral.com/information-directory/attractions-places-to-visit/caves/mulu-caves-gua-mulu-in-sarawak-malaysia/
  • O'Hanlon, Larry. "Excavating the World's Basements." Discovery.http://dsc.discovery.com/convergence/planet-earth/guide/caves.html
  • Waitomo Glowworm Caves. Discover Waitomo.http://www.waitomo.com/glowworm-caves-information.aspx

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