I revisited some older work as I was convinced I could squeeze more out of it, the original piece is here: https://petemcnally.com/2018/03/02/seamless-materials-from-3d-scans-in-artomatix/
This tiling material is the result of using Artomatix, Knald and Substance Painter on some 3D scanned rubble in a wheelbarrow. I spent more time on this round of PBR texture work and I think this is a better result.
Material - Earthen rubble
Material - Earthen rubble
Simple smooth ground geometry with tessellation and displacement