Thank you both so much for the warning. It is interesting that Higginson in his guide has many warning of dangerous sections due to traffic, road conditions, etc. But in Stage 22 of his guide he warns that "the decent through El Acebo has claimed cyclists lives, so take great care." Then for the village of El Acebo he states, "El Acebo's main road runs through its centre, although the road is not smooth tarmac, but concrete and slippery cobbles with a gutter running down the centre. On bicycles this is a potential death trap and extreme care should be take, even in dry weather. If it is raining, get off and walk through the village --cyclists have died here."
In looking at the photo, I can see where if either wet or too much speed, that a person could loose control on a corner. Also rims do tend to heat up on long descents and you need to stop to let them cool so you can maintain good braking. On my long bike rides I tend to avoid going too fast on descents, as I would not like to get into an accident. In my youth, I have lost control of a motorcycle on slick roads and at corners from going too fast for the limited traction that two thin wheels provides.
Again, I appreciate the warning. Thank you.