River meanders are natural curves or bends in a river's path. They form as water flows over land, eroding the outer banks and depositing sediment on the inner banks. This process creates a winding shape, allowing the river to navigate around obstacles and changes in the landscape. Over time, meanders can become more pronounced, leading to the formation of oxbow lakes when a river cuts off a bend. This dynamic process is influenced by factors such as topography, water flow, and sediment type, contributing to the river's overall ecosystem and landscape.