What would cause the sides of a living quarters to appear wrinkled?

It's a 2005 featherlite and the aluminum skin where the living quarters part is it looks wavy.

Rhoni

EDIT the above message, so we can have an idea of what is wrinkled???...

This isn't the trailer you needed moved from MA to CA, is it?

I did not write the original post, but I think I have seen what she is talking about. What I have seen is that the aluminum looks to have large wave like indents in it. The only way I can figure that this happens is that the aluminum has some "give" in it and after going down the highway and getting blasted by air, the aluminum develops some wave in the skins. It seems to me that this happens in between the side beams where there is no "adhesion" (rivets, etc) to a  solid piece of the upright frame.

Is this what you are talking about? I have seen it before.

Yes, that's what I'm talking about...it is most noticable in the area where the sheeting is flat, outside, living quarters area only.  The horse area has ridges, and yes, I guess more rivets.

Ronni