A large amount of pumice, a very light and porous volcanic rock formed by the rapid solidification of gas-rich glassy lava foam, has been found on the coast of Kitadaito Island in Okinawa Prefecture, Japan. The meteorological agency is now investigating its origin.
Initial results suggest it may have been ejected during an underwater volcanic eruption in August 2021. The pumice was found along the coast for more than a dozen kilometers from the northern to the eastern coast of Kitadaito Island.
The stones range in size from a few millimeters to the size of an adult’s fist.
The Volcanology Institute took samples to determine the exact origin of these mysterious pumice stones found along the coast of Kitadaito Island in Okinawa Prefecture, Japan.