Volcanic ash is a fine material produced during a volcanic eruption. It consists of tiny fragments of rock, minerals, and volcanic glass that are ejected into the air. When a volcano erupts, gases and magma force these particles out, which can then spread over large areas, affecting the environment and air quality. This ash can be harmful to both people and the environment. It can cause respiratory issues for those who inhale it and can damage crops and water supplies. Additionally, volcanic ash can disrupt air travel, as it poses risks to aircraft engines when flying through ash clouds.