all explained by comments above.
please note, there is a route from nearly Torre to Manteigas through the almost bottom of the glacier valley quite awesome. However, on july 2012 it was on maintainance. workers were giving a new tarmac to the route, wich means a very good route is about to be discovered.
A must ride through Serra da Estrela Mountain Natural Park and Glacier Valley.
Busy traffic on weekends!
Parece ser que es una ruta frecuentada. Me encontré con varias motos haciendo pasadas al inicio desde Covilha. El asfalto es bueno y las curvas espectaculares. Las vistas son espléndidas casi desde cualquier punto. Ojo con el frío, aun en verano si cogemos nubes o niebla podemos pasar verdadero frío, doy fe.
You can see my movie production in the link above, HD quality, Good Turns
Sabugueiro / Loriga / Unhais da serra
This road is popular with Portugal local bikers and has some spectacular viewpoints. It passes through a ski resort area, a shock for Portugal, after rising from the town to a flattish mountain top at 2000 metres. There is an interesting diversion to the right, signposted Manteigas or Valley of the Glacier,which after a mile or so gets to the head of a perfectly formed Glacier Valley.Back on the main route there are some good bends and you can finnish in the village of Seia where you can find a number of good restaurants.