The Book of Santiago and the pilgrimage routes.
The great time of pilgrimage was the end of the s. XI and the s.XII. Compostela became as famous as Jerusalem and as Rome. Pilgrims came from all over Europe, crossed France and followed in Spain the "French Way" that led them to Santiago. The different routes of France come together to cross the Pyrenees by a small number of steps. Around 1150 the Book of Santiago was written, which included a "Pilgrim's Guide" which constitutes a first-order document that provides indications on the paths to follow, the regions to cross, the dangers to avoid, the monasteries, sanctuaries and hospitals along the way. According to the author of the "Guide", there were four roads that led to Santiago; They still met in Spain, in Puente la Reina, to form one. The first crossed the Somport pass, the other three joined at Ostabat before crossing the Cize or Roncesvalles passes (Veilliard, 1963).