From award winning photographer Olivier_Grunewald and posted by Boston.com are a exemplary collection of photos. And its not often you get to see what a 200-meter lake of sulfuric acid is like. But the trek you take with the miners who traverse down thousands of feet to obtain chunks of pure sulfur is pretty amazing. The illumination of moonlight, torches , and molten sulfur lends itself to some pretty incredible imagery.
Some video just because it gives a deeper reference to the scope of the volcano