Carbon Ring Pics?

I've read quite a bit of posts that reference the dreaded "carbon ring" lately.

Does anyone have pics of one? Either bore scope pics, or maybe someone has cut away part of the barrel for close up.

I just saw a barrel cleaning video from Speedy Gonzalez. He said he gets a nylon brush about 1 caliber larger and rotates it in the barrel between the end of the neck and rifling. He patches it out with a clean patch after.

I know it doesn't answer your question, just thought I'd pass along the information.