For a change: the (small) car park at the starting point and the one at the end of the tarmac road (campsite entrance) are free of charge.
Note that the route between the chapel ruins (4) and the rejoining of the main trail is quite ‘open’… it sometimes follows a well-marked path, sometimes just a faint track, and takes twists and turns to avoid overly wet areas. In places, rely on your instincts and sense of direction: there are no cairns here, just peat and sheep watching the walker pass by without much reaction.
The ‘difficult’ rating stems not from the distance or the total elevation gain, but from the rather tricky terrain in the southern part of the walk.
Anyone wishing to go on a mountain hike should take the path on the left between (1) and (2) or continue straight on via (2). Be careful, however, to only venture into this mountain range in favourable weather conditions. Do not attempt the hike in overcast conditions or if there is a risk of a storm. The locals will confirm this.