About 7,300 years ago, Kikai produced the Kikai-Akahoya eruption, a giant event that released an estimated 133 to 183 cubic kilometers of magma in dense rock equivalent. The eruption reshaped the landscape, sent ash across large parts of Japan and left behind a vast caldera south of Kyushu. Now, new seismic research suggests that the magma reservoir involved in that ancient eruption is not empty. It is being refilled.>Snip< One of the most important findings is that the magma under Kikai is probably not simply a leftover pocket from the eruption 7,300 years ago. Chemical studies of later volcanic rocks...