Seama Kikai-Akahoya Deposit distribution (IMAGE) Kobe University Caption Kobe University geoscientists report that the eruption ejected between 133 and 183 cubic kilometers dense-rock equivalent of volcanic products (ash, pumice, etc.) that settled in an area measuring more than 4,500 square kilometers around the eruption site, making the event the largest volcanic eruption to have taken place within the Holocene. Credit SHIMIZU Satoshi Usage Restrictions Credit must be given to the creator. License CC BY Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.