Boulders are large, rounded rock fragments typically measuring more than 256 mm (10 inches) in diameter. They are formed by either the natural weathering and erosion of larger rock formations or by the movement of glaciers during the Ice Age. Boulders play important roles in various ecosystems, providing habitats for plants, animals, and microorganisms. They also play a crucial role in erosion and sediment transport processes, as well as in landscape aesthetics. Additionally, boulders are commonly used in landscaping and construction projects for their durability and aesthetic appeal.