in today's lecture on volcanoes, we'll delve into the fascinating phenomenon that often remains under wraps until moments before they kick off again with an eruption. it's crucial not to underestimate the signs a volcano shows us pre-starting its active phase; these subtle cues can lead to various interpretations about what lies beneath the surface, waiting to reveal secrets of the earth's core. this insight allows us to appreciate the powerful processes at play within our planet, reminding us of the dynamic and ever-changing world we inhabit.