5. Galeras In Colombia
Experts believe that this volcano has been active for over one million years. There have been numerous eruptions, although the last recorded one took place in 150.
Because there have not been any recent issues with it, over 450,000 people live on the slopes of Galeras. In 1988 the volcano began to smoke and smolder, something that it has been doing ever since this time.
6. Sakurajima In Japan
At one point, Sakurajima was its very own island. However, after an eruption in 1914, the lava flow connected Sakurajima with the mainland.
There have been a countless number of small explosions from this volcano. Every year at least one eruption occurs which pollutes the sky with clouds of smoke. Because of the danger that Sakurajima poses, nearby towns have all created their own shelter systems to stay protected.