Tar Golem doodle

I want to be in himI want to be in him

Oh spooky fellow there !

Loving the play of pose and lighting in this; very much a strong display! Out of curiosity, since we've seen many a golem around these parts; how do they come to be? Are their bony features intrinsically a part of their body, or do they start out as just tar or bog, and then pick them up later?