Recent research indicates that volcanoes previously deemed extinct may not be inactive, as demonstrated by the Methana volcano in Greece, which erupted after being dormant for nearly 110,000 years. This finding raises questions about the traditional definition of volcanic activity, which classifies a volcano as extinct if it hasn't erupted in the last 10,000 years. The study, published in Science Advances, highlights the need for closer monitoring of such volcanoes, as they may be accumulating magma and could erupt unexpectedly. Similar cases have been noted with Taftan in Iran and Ciomadul in Romania, both of which have shown signs of reawakening. Experts suggest that a new classification system should focus on volcanic activity rather than time elapsed since the last eruption. Enhanced monitoring techniques, including satellite data and magnetotellurics, are essential for identifying volcanoes that may still be active beneath the surface. This shift in understanding could help mitigate risks associated with potential eruptions.