Initially it's 9% but you do get a lovely warning that things are going to get difficult with this 18% sign.
Round a left corner you get this view - a kind of "There you are, have a go at that then" sort of moment.
At the top of that short straight you get this corner and by now you know its going to be difficult.
Round the corner there's this long straight - all 18% - up a high-sided lane, past the pill box on the left which isn't even half-way (from what I can remember!)
8 out of 10 in 100 Greatest and deserves every point!