Kind of a weird jog in the roof peak line going there?
I believe the area you are referring to is the top right of the picture? I believe that is the valley that runs just to the side of the chimney.
We wound up spending all last weekend cleaning out the attic and getting rid of 5 bags of toys, 4 plastic boxes of books and teaching books, and some of the other crap out of the attic. Vacuumed out the attics for the areas I could reach. --Brian
"It drops into your stomach like a Abrams's tank.... driven by Rosanne Barr..." A. Bourdain