At Daikoku volcano we came upon a convecting, black pool of liquid sulfur with a solidified sulfur crust (bottom image). Gases, smoke and liquid sulfur were bubbling up from the back edge of the sulfur pond. The top image shows a zoomed-in view of the liquid sulfur extruding from a fracture in the solid crust. Image courtesy of Submarine Ring of Fire 2006 Exploration, NOAA Vents Program
