The Ash flying
Natural disasters are dangerous as compared to the ones caused by man. This is because, unlike man-made disasters, we can do nothing when nature decides to act up. If you live anywhere near a volcano, the best thing you can do is flee to safety to avoid damage. Below is a picture showing the vicious power of volcanoes.
The photo was taken when Mt. St Helen erupted, and the ash was flying in the air. The photographer Robert Landsberg who took this picture died amidst the ongoing chaos and destruction.