EDIT: I've had a few people asking why when you open the file it's just a flat plane. This is because you need to be in rendered mode to see the effect as the texture is procedural and there is no actual geometry. Hope this helps!The render with the iron giant was a scene I used the dunes model with. (The iron giant and everything else in the scene other than the dunes are NOT included)The material is completely prodcedural with no textures, meaning you can completely control everything about the material like: Dunes height, ripple displacement and the seed etc,Get completely unique and new dunes by just chaning the seed.Renders are made with a HDRI from HDRI haven for more realistic lighting, it is included in a zip file.Subdivion modifiers used for realism but can be turned off for a low poly look or a background object.Different File types included: blendModelled in blender.