This route does not in Marina Baixa exactly either. But it is very close.
I want to talk about it because it is one of my favourites routes althought I couldn't finish it because of time. I had to leave from Fleix (place where "Hell's Ravine" is) and I came back before expected.
And I will say you more, we (Mario, Ana and me) want to do it when we finish our last exams. I dare you to come with us!