The modeling of landscape was little tricky, instead of modeling stone by stone I decided to divide the landscape to 5 parts, and for each part I created two 8k maps (32bit displacement and 8bit normal map). I used GeometryHD in Zbrush, each part of landscape has 150 mln. polygons. I refused to use Mari, even 8k maps were not enough for decent quality texture. So, I textured everything in 3dsmax, through Bercon Noise.