We saw this very large sign yesterday near the cathedral. I did some research about it:
It is said that the Apostle James’ tomb was discovered in the year 813. Alfonso II was king of Asturias during that time and is said to be the first pilgrim to go to Santiago to visit the tomb. (Not sure if it was called Santiago then since Santiago means St James.) Alfonso II left from Oviedo.
The Camino that begins in Oviedo and ends in Santiago de Compostella is called The Camino Primitivo. It is considered to be the original pilgrimage route to Santiago, making it the oldest known path for this pilgrimage. The term Camino Primitivo translates to Original Way or Primitive Way.
We have heard it is a very beautiful camino but it is a difficult camino. There are long distances between towns for places to rest or sleep and mountains to cross. So, we have not given a lot of thought to doing this particular camino.