If anyone is going to Portugal and planning to tackle the Serra da Estrela mountains, I would love to send you a little guide we picked up at the tourist bureau. I think it would really help with planning. It is for walkers, but gives details on what you can find in the towns, elevations, history of the region etc. It was free, but is so good I can't bring myself to throw it out. If you are interested, email me via our website (contact us form) and we'll drop it in the post to you. The area was so beautiful, one of the most gorgeous we have seen so far.