Mystery Crack In Rear Outer Wall of My Cougar

What's the rest of the story? How did it crack? The thread title says "mystery", but is there more info? Did you back into something? Looks like something hit the RV, rather than the RV hitting something.

I'd vote for the auto body shop for a fix, but that depends on how picky you are on the final results.

Let us know and post finished photos too please...