5 Most Dangerous Volcanoes in The World That's Scary! All around the world it is estimated that there are about 1350 active volcanoes. Many of these volcanoes are located in remote areas and pose very little threat to human life. Others are located within close proximity to large cities and are capable of unleashing untold levels of destruction. When thinking about the most dangerous volcanoes on earth the yellowstone super volcano often comes to mind but for various reasons many scientists believe this is not true and that there are many other volcanoes that pose a far greater risk to human life. If any of these volcanoes were to erupt, the fallout could be unlike anything we have ever seen before. From ilItaly to the United States here are five volcanoes that may just be more dangerous than yellowstone.