Nature 28 Materials - Seamless - PBR - Metal / Roughness - 4K Textures

You' ll get 28 seamless nature materials - based on 4K PBR textures - Metal/Roughness workflow plus Ambient Occlusion, Hight&Normal 

The materials are based on photos from forest/rocks/cave, optimized for realtime engines and renderer in Substance Alchemist.