You can see in this view the walkway from the previous photo.
While it is narrow it is not too narrow.
I made sure I walked next to the wall as the drop down from the walkway about 25 feet.
Going up this side were great views of the Pena Palace.
I made it past where the wall ends in the top left hand corner.
I didn't make it to the top on this side...too far and too scary!!!!