👉 In geology and environmental science, a sandpile is a type of aggregate pile that forms when large quantities of sand are deposited on top of an area. These piles can be formed by a variety of processes such as erosion, wind, or rainfall, and they often have the effect of accumulating sediment in areas where it would otherwise be lost to the atmosphere or washed away by water. Sandpiles can range from small, irregular shapes to large, compacted aggregates, and their presence on land can