This texture is FREE for personal and commercial use!
It can be downloaded at
https://www.texturecan.com/details/177/
They are old chewing gums spitted on the floor. Some streets are full of black patches of chewed gums spilled around.
They are dark in colors as people stepped on them. This also left loads of shoe marks and dust on these gooey gums.
This is a seamless and tileable PBR CG texture for 3D artists.
Each package usually includes a Base Color Map / Diffuse Map, Normal Map, Roughness Map, Displacement Map, Metallic Map (Metals Only) and Ambient Occlusion Map.
The texture maps are applicable to Blender, Sketchup, Maya, 3D Max, Cinema 4D, Unity, Unreal etc.