Indonesia has 127 active volcanoes. Only the U.S. (168) and Russia (144) have more. Essential packing list: We landed in Java and drove ... of sulfur out of the Kawah Ijen crater.

So why do they do it? In this episode of Risky Business, we head to the Ijen volcano to find out. More from Risky Business In East Java, Indonesia, hundreds of miners face deadly smoke to mine ...