Really? Try to do this with any other "painting".
No, it's not a painting and it's not a 3D image either. It's a two dimensional image with a terrain map encoded into it by analog variation of the color density of the image. It is not, therefor, a photograph, having not been created by reflected light, in that there are no light artifacts observed. Nor are there any pigments, so it is not as you characterize it, a "painting."