Playing with Cinema 4D, I discovered how to create this kind of “landscapes” with just one plane and a displacer effector. So, all of these images have been created with just one plane. This gave me also the chance to learn and practice the new rendering software Arnold for C4D.
For the tip: “All you have to do is to create a plain object, then add a displacer effector as a child and play with the layers on the shader parameter. It’s worth playing with so many layers to reach complex shapes. (some shapes have a plain effector as well)