One of our first drives on Madeira was up the Encumeada pass. We wanted to get to a hiking destination. After driving up the entire road of switchbacks and steep rises, driving some further and further again, the road was blocked and we got stranded there. We did then change our plans because driving all the way around the island was not practical. I would have whished for a sign somewhere... maybe on the entry to this road?
Anyway: we had a great view from partially up the pass road.