Volcanoes can be spectacular, but these infernos can also unleash cataclysmic destruction, from rivers of lava, to explosive blasts capable of scorching vegetation and landscape, to towering toxic ash clouds able to rise hundreds of thousands of feet into the air and kill animals and humans by suffocation. This episode explores how unexpected eruptions can happen, and when they do, how they are both awe-inspring and terrifying.

Volcanoes can be spectacular, but these infernos can also unleash cataclysmic destruction, from rivers of lava, to explosive blasts capable of scorching vegetation and landscape, to towering toxic ash clouds able to rise hundreds of thousands of feet into the air and kill animals and humans by suffocation. This episode explores how unexpected eruptions can happen, and when they do, how they are both awe-inspring and terrifying.