Although I see boulders in the photo, I think it may have helped if you had them moving som rocks to match the title. Also I think if you had shot from more of an angle instead directly overhead it would have shown ibit more depth. cool macro, I especially like the ant sticking its big head out of the hole
These guys are pretty darn impressive with how fast they can move earth. The angle makes several of them look a bit dead at first, and I kinda wish the one in the lower right could have been fully in frame. Good response to the challenge.