The Credential is the passport of the trek that you want to undertake: Via degli Dei. Along the path the affiliated structures will put their stamp on it as proof and as a memory of the journey you accomplished. Once the journey is over if you obtained at least 5 stamps you can send by email (
info@infosasso.it) or with WhatsApp (3348334945) a copy of the credential so that the tourist office of Sasso Marconi will provide a free shipping of the official gadget of Via degli Dei.