https://gamesartist.co.uk/layered-cliff/
Environment Artist Baek Jongchan presents a detailed breakdown of creating a complex Cliff Material using Substance Designer. It covers steps like introducing deviations, adding details, creating cracks, adjusting the height, moss, vegetation and HDRI lighting.
https://www.artstation.com/roadrunner
https://www.artstation.com/artwork/qeZQBn