I created this environment from a single photo that I took in the drill, I then used Alchemist and Bitmap to Material software to integrate this photo, I also generated amplitude to obtain a correct tesselation and finally I mixed with different materials, mud, dust etc. I then used 3dsmax to create a plan with a correct tesselation ...
I imported the whole in Unreal Engine 4 where I created a tesselation shader and an instance to directly import other alchemist textures and drag and drop them into the environment, I positioned a camera and realized lighting using exponential fog and post process volume ... I made a diagram of my workflow for this environment .. :) ///