When one thinks of Japan and natural disaster, the things that usually come to mind are earthquakes, tsunamis, radioactive lizards, the occasional massive nuclear power plant explosion. Not volcanoes – those are usually delegated to the sole country that dared to give bankers the middle finger, Iceland. And yet, overnight Japan declared a level 3 alert (on a scale of 1 to 5) when a volcano in central Japan erupted, sending ash clouds down the mountain’s slope for more than 3 kilometers.