Visit to the prenuragic altar of Monte d'Accoddi and the necropolis of Su Crocifissu Mannu. We visit the so called Sardinian "ziggurat", the only example in Europe, and the "Domus de Janas" nearby. An exciting dive in the past! To complete the tour, you can not miss a visit to the National Archaeological and Ethnographic Museum "G.A. Sanna" in Sassari. And in the end we'll have an aperitif in the center of Sassari which will be an occasion for a conversation.