A volcano that erupted after being asleep for more than 100,000 years is leading more volcanologists to say we must redefine volcano activity to ensure eruptions don't surprise us.

A geological study of Greece’s Methana volcano reveals it erupted after a dormant period of about 100,000 years, challenging the 10,000-year benchmark for declaring volcanoes extinct. The research ...

The youngest eruption of the Methana volcano (brown) flowing into the sea, with limestone in the background. The Methana volcano in Greece appeared dormant for over 100,000 years, but magma was ...

Most people think of volcanoes as either erupting or not. The reality is considerably more unsettling. The classification of ...

The last eruption of Greece’s Methana volcano was around 250 B.C.E. Ever since that event, which was recorded by the Greek historian Strabo, the mountain has lurked silently, just across the Saronic ...

Romania’s Ciomadul volcano last erupted some 30,000 years ago, but as a new study published in Earth and Planetary Science Letters reports, between 5 to 14 cubic miles of magma still simmer below the ...

For more than 100,000 years, the Methana volcano in Greece appeared dormant. No lava, no explosions, no ash clouds. It appeared extinct, like many other volcanoes today. An international research team ...