This tiling material was created from a scanned asset, cleaned in Artomatix and Alchemist. I made two versions, the first can be applied to vertical surfaces such as a canyon wall and the other to horizontal surfaces, like the ground or base terrain. It scales pretty well to detail large canyons or smaller ground sections about 2x2m. Artomatix was critical in making this into a more versatile asset, good to hear they've been acquired by Unity!
Context Render,vertical version (Toolbag video clip)
Wet ground version (Toolbag video clip)