I would say, less that you think. The strata is done with 2 strata layers, with quite a few strata files. Then the grass is probably about 8-10 layers (I don't remember, it was a while ago) and then sand and rock, and mabye an underwater layer or two. I don't recall exactly, but that should be alright
It's rock strata, not soil. Granted, I could have made it more subtle and perhaps more of a rock color, but this is fantasy, not reality, which is the beauty of TG. Otherwise I could take a photo of a mountain. Anyway, glad you liked it, and this is an old piece, since this I have improved how I create some things. Thanks!