found: Work cat.: Wittig, S. A pilgrim guide to the Camino Primitivo, 2017.
found: Camino de Santiago website, July 9, 2018(The Camino Primitivo is the most challenging of all the ways to Santiago de Compostela but also the most rewarding ones as you will pass through the untouched nature of Asturias. Distance: 344 km.)
found: Confraternity of Saint James WWW site, Sept. 20, 2018:The Primitive Route (Also known as El Camino Primitivo or La Ruta del Interior; takes a direct route from Oviedo to Lugo and onto Melide, which lies on the Camino Francés)