The reservoir of one of Earth's most explosive volcanoes is quietly refilling with magma, scientists have revealed. The underwater Kikai volcano, off the coast of Japan, last erupted 7,300 years ago in what was the largest explosion in modern times. And it sparks concerns that another giant eruption could be on the cards. 'We must understand how such large quantities of magma can accumulate to understand how giant caldera eruptions occur.' 'This magma re-injection model is consistent with the existence of large shallow magma reservoirs beneath other giant calderas like Yellowstone and Toba,' Professor Nobukazu said.

Source: Daily Mail April 09, 2026 10:04 UTC