I'll just leave this here
That appears to be circle "I", Given the position of the cut on the bottom left piece and it looks like it was taken from the map and had some kind of effect done to it.
Ok after thinking about for a bit here are my personal thoughts and questions.
first look to the source :
Sebur why would sebur post this here?
~ to my knowledge Sebur isn't a part of the game
~ Why would Sebur post this?
Now the image :
~From what I can see it appears to be the image is the map Tiffanys posted due to the circle.
~ It appears to have had some kind of effect done to it maybe like a Negative? (Like old photos) I say this because the line was originally red but is now the opposite and same for the other colors.
I think either Sebur has something to do with this game and we aren't aware of it, Or Sebur thought they saw something and wanted to post it. But the latter raises the question does Sebur actually know what they are talking about or is it just completely random and has nothing to do with the map. ( Like seeing messages that aren't really there) Or is Sebur trying to feed false information?