Here's an except from the Route of Routes guide describing the portion I am trying to map:
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KSO this path, initially with a concrete wall and views of the Cathedral of Santiago on your left, and continue on the path through the trees. At the first small junction veer R and shortly come to a clearing. Cross the clearing through the gap in the wall and continue down the path on the other side. Near the bottom follow the path round to the road on your left, to the park gate and a small parking area. At the end of the parking area turn R on the start of a forest path marked with a red arrow on a granite marker. These waymarks continue to the pinnacle. About 100m along this path, veer L (i.e. don’t take the other entrance into the park), as indicated by the red arrow on the stone wall, up a small hill. At the top go L and follow the path round to the R (where you will see a red arrow on the stone to your right). Keep on this path till you come to a yellow and white wooden marker and a car park with a wooden mounted map of “As Sendas do Monte Pedroso”. With the car park in front of you turn sharp right at a small granite stone near ground level and a red and white wooden marker. There is a (faded) red arrow on a stone to the right as you go up this small hill. Shortly, as the path runs alongside the tarmac road, go through the “Area Recreativa Lixo”, and turn L onto the path marked “Merendeiro”. This path winds up and round to a large recreation and BBQ area, before it meets the tarmac road again.
Cross the road and, almost immediately, turn R onto a narrow path, marked by a small red dot on a stone on the ground to your right. This leads onto a wider path marked by a red dot on a tree to the left. Continue on up until you reach a small piece of open ground with 3 path choices ahead. Take the narrow one in the middle, marked by a red arrow on a stone on the ground to your right. Continue on up this path, marked by red arrows and small dots. As you make your final ascent, you will see the Monte Pedroso cruceiro (stone cross) and TV mast straight ahead, and the emerging spectacular views of Santiago on your right. Follow the red markings all the way to the top.
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