26Campi Flegrei
Concerns are increasing that Campi Flegrei, a "supervolcano" very close to the Italian city of Naples could erupt again for the first time since 1538. Previous eruptions have triggered volcanic winters globally, causing widespread crop failures and resulting in famines.
27. When Mount St. Helens erupted in 1980, the blast was heard in British Columbia, Montana, Idaho, and California. However, the blast was not heard in Portland, Oregon which is located only 50 miles away from the eruption.
28. There is no reason to expect a supervolcanic eruption at Yellowstone in the near future. Such events are 'neither regular nor predictable.'
29. In 1600, volcanic eruption in Peru from Huaynaputina created volcanic winter worldwide and this winter killed approximately 2 million people in Russia.
30. There is a volcano in Indonesia named Kawah Ijen volcano erupts with blue lava. Local men trek up the mountain daily to mine its sulfur - they carry loads of 180-200 pounds, but the sulfur only sells for only 2.5 cents/pound, so many men make the climb twice a day.
