The pilgrimage to Maria Trens was already well-known in the Middle Ages. Pilgrims from far and near traveled to the "Trenser Mother" and asked for help. When exactly the pilgrimage started, isn't exactly to prove. A first documentary mention comes from an indulgence from Avignon from 1345. A hundred years later that the pilgrimage destination in Campo di Trens near Vipiteno was already very popular.