Cumbre Vieja Volcano – La Palma, Canary Islands, Spain
Experts believe that the next eruption of Cumbre Vieja might be one of the worst the world will ever see. This makes it a shoo in for this list of most dangerous volcanoes. The main reason for this is that it has a very weak west wall. This could fall and the casualties could be very high. They also expect that the collapse would trigger tsunamis that could run across the Pacific Ocean.