A sand dune is a mound or ridge of sand formed by the wind in deserts, beaches, or other sandy areas. They are typically shaped by the constant movement of wind, which carries sand grains and deposits them into piles.
Sand dunes vary in size, shape, and formation, ranging from small ripples to large hills. These formations can range from subtle undulations akin to small ripples, which may form along the windward side of a beach or desert.
Sand dunes play important roles in coastal protection, providing habitats for unique plant and animal species adapted to sandy environments, and serving as landmarks in desert landscapes.
