Why are there faces here?

Please Answer if you know why or how to fix this Stay Safe!

I'm not sure the question is clear enough to answer presently. Remember, words like here and this mean nothing to someone else out of context. Please highlight the faces in question and describe, in as much detail as possible, what is wrong and what you would like to see instead and I'll see if I can help.

inside the circle there is a thin face 

More info. I cannot delete it. 

maybe you could show the very same picture, only with wireframe (so we can see in x-ray vision)...

or maybe post your blend file?

My guess from this picture is the Ngon on the bottom is having trouble contouring to the faces on the inside curve. To fix you would need to break up that Ngon.

Or

The face I think is an Ngon is actually a quad and its bypassing that interior geometry

the only problem with this idea is that the face in question appears to be facing upward (it is rendered as if receiving the light not shaded like the rest...), like it is protruding from inside the other part...

Yeah true, moral of the story here. We need more screen shots or a blend file. :)

here is a wire frame version

If you can help please  me1958424  and  phoenix4690 

HI shanr, can you, in Vertex Select Mode, select this vertex and delete it?

It worked I used Alt M + X = Remove Virtices 

Thanks spikeyxxx