It is a defensive wall from ancient times. I did it in Blender and GIMP, but in the end most of it was done in GIMP using concept art techniques. For the creation of the landscape I needed some parts from different photos, which I got completely from Pixabay. With the exception of the defensive wall and the tower. Those I modelled and textured myself in Blender. The downloadable image has a size of 3000x1400 pixels.