The tree at the end of the path

When does a photo stop being a photo and become something else?

Photo manipulation with computer software can drastically change the look of a picture. The image can be altered in so many ways. Some have suggested the term "photo art". I can not think of a better term.

This picture was edited in Photoshop, Lightroom and Topaz Adjust. The resulting image has modified content and dramatically altered dynamic range, color, and selective sharpness and diffusion.

So is this a photo... or is it something else?