Kikai caldera in Japan is showing signs of magma reservoir refilling.
Research from Kobe University sheds light on volcanic activity.
Findings may enhance understanding of other caldera volcanoes like Yellowstone.
Briefing: Japan's giant caldera volcano is refilling 7,300 years later
Strategic angle: The magma reservoir of the largest volcanic eruption of the Holocene is refilling, providing insights into giant caldera volcanoes.