On the positive side it looks like it would make a good texture. It reminds me of an old polished rock road that has been beaten into the dirt and then abandoned for a long time.
Constructively though, It does appear to need further work before it can be used on a larger scale. As LigH pointed out, it needs to be tileable. I've found that the best way to do this is to use an "offset" feature (names vary) to slide all the edges of the image to the middle. The result is that the parts of the image on the edges afterward are naturally tile-able. Then once you erase the seams in the middle (by painting/cloning over them) you have a seam-free image. I used to have a tutorial on how to do this, but it's not available anymore online. I'll remake one since I haven't seen one anywhere.
Another note is that the image seems to have smaller "rocks" nearer to the top edge. This leads me to believe that the original source was a photograph. Now, photo's make great textures, you just have to be careful. If it IS getting smaller due to perspective, then this will show up in the tiled texture as horizontal bands. The idea is that you want to take a photo that is as flat as possible and then let the game engine create the perspective from the texture. The best way to do this is to get farther away and zoom in (if you have a good quality camera this is a good option). This can be difficult when photographing a ground/floor texture. Unless you have a ladder or building you can conveniently climb, you may have to begin with a smaller sample of the ground and then just manually tile and then alter it to expand it's overall size.
I hope these comments help. If anything is unclear, let me know and I'll be glad to clarify.
