Volcanic ash deposits are fine particles ejected during a volcanic eruption. These tiny fragments, often less than 2 millimeters in diameter, can travel long distances through the air before settling on the ground. The composition of volcanic ash varies depending on the type of volcano and the materials it erupts, including minerals and glass. When volcanic ash accumulates, it can create layers that affect the landscape and soil. These deposits can enrich the soil with nutrients, making it fertile for agriculture. However, they can also pose hazards, such as damaging infrastructure and affecting air quality, especially in areas near active volcanoes.