The last Plinian eruption of the Corbetti Caldera occurred around 396 BC (14C, soil).
The pumice lapilli fall deposit dispersed over an area of over 1000 km2.
The pumice corresponds to 0.4 km3 DRE of erupted magma.
The post-caldera stage of Corbetti has uniform geochemistry.
Future eruption of Corbetti would endanger towns of Hawasa and Shashemene.