A beautiful artwork carved in a tree trunk by our local craftsman. It resembles a mermaid together with a fish on her left.
Photoscanned with an app "Polycam" on my android phone.
For some reason it works only in eevee and without ambient occlusion. With it it just breaks and looks blocky and metallic. If anyone knows why, let me know in the comments so i can fix it ;)
The reason it looks weird and has all the black pixels in Cycles is because the normals are custom for some reason (if I had to guess, I'd say that your scanning app is the culprit). If you go into edit mode for the object, select everything, and use "RESET NORMALS", you're good to go for use in Cycles.