Experts say the mass probably came from an underwater volcano near Tonga which erupted around ... They have since sent samples of the pumice stone - which range "from marble to basketball size ...

where pumice and lapilli deposits piled up as high as nine feet (three meters) near the volcano in several hours. The column of ash may have hovered in the air for up to 12 hours. Then it ...

Pumice stones spewed from an undersea volcano that have fouled coasts in Okinawa Prefecture have apparently made a U-turn and could reach the Izu island chain within days, a research institute’s ...

Pyroclastic flows contain a high-density mix of hot lava blocks, pumice, ash and volcanic gas ... Many of the victims were found near their homes, indicating that they did not have time to ...

Okinawa Governor Denny Tamaki on Nov. 2 asked the central government to dispatch the Self-Defense Forces to help clear the blankets of floating volcanic pumice stones that have clogged ports in ...