sorry for late reply. actually, it's more like a mud with tracks from big vehicles. red color doesn't really stand for anything, a dirt, a rusty ash maybe. but - feel free to interpret any way you want
Interesting image, with really good use of textures. I feel maybe a little more could have been done with the main pylon, as while the rest of them and the image look very painter-like, that one does seem a bit like a squinty doodle. It kinda lets the rest of the piece down a bit in my opinion.
Thanks for comment. I wanted to keep this image loose and restrain from working details too much or making things too stiff so it was a bit hard for me to keep the balance between "sketch" and "final". I might have failed with the main pylon but i do not see it right now. Sometimes when I leave things for a while and come back after some time it's way easier to see faults. So I'll keep that in mind and wait