The Carballeda of Val de San Lorenzo Activity · Val de San Lorenzo, Astorga, León Image of Val de San Lorenzo, not of the place itself. The village's main festival, held on the first Sunday in September and declared of regional tourist interest. It is one of the occasions where the popular traditions and folklore of the Maragatería are best preserved. Photo: Antramir (CC BY-SA 3.0) What to see and do in Val de San Lorenzo