Last year three tourists died in Italy when they fell into a pit in a volcanic crater. At present, about 800 million people live within 100 km of an active volcano - a distance well within reach ...
The JCG announced that it found the most likely culprit as it located an underwater volcanic crater believed to have erupted within a year near Torishima island in the Izu island chain south of Tokyo.
But even without these lofty nicknames, the crater is a stunning a sight. Formed 2.5 million years ago after an extinct volcano collapsed on itself, the caldera is largest of its kind in the world.