A point bar is a landform found along the inside bend of a river or stream. It is created by the deposition of sediment, which occurs when the water slows down as it curves. This accumulation of sand and gravel builds up over time, forming a small, often crescent-shaped area of land. Point bars are important for river ecosystems as they provide habitats for various plants and animals. They can also influence the flow of water, affecting erosion and sediment transport. Understanding point bars is essential for studying river dynamics and managing waterways effectively.