The Via de la Plata is one of the longest if not the longest pilgrim routes in Spain. It travels from Sevilla in Andalucia up along the spine between Spain and Portugal through Merida, Cáceres, and Salamanca to Zamora. At Zamora, the pilgrim has a choice to continue on to Astorga where it connects with the Camino Frances or to walk the Via Sanabrés which travels west towards Ourense and then up to Santiago de Compostela.
The VldP is a much different type of Camino than walking the Camino Frances. The days can be a bit longer with some days reaching 40+ Km from one town to another. There are substantially fewer pilgrims walking at any given time. It is also a very beautiful Camino. Walking through many national parks. It is, however, a route that takes you through Extremadura where temperatures can reach over 100 degrees Fahrenheit or 40 Celsius during the summer months. It is recommended that this Camino is best walked in the early spring and late fall where temperatures are more moderate.
The markings are good and there are adequate Albergues to sleep in. A basic command of the Spanish language is recommended.
Here is a link to view the stages of the Via de la Plata