This leg leads definitively out of the city, to dive into a very sparsely inhabited reality, the Val di Zena, where beautiful views abound, strongly related to the ancient presence of the sea in these areas. From the church of Rastignano, the path goes up towards Monte Calvo, passing alongside the ancient Furnace and the Cemetery. On the top of the hill, in the presence of the altar dedicated to Mater Pacis, there is an outstanding 360 ° panorama, where it is possible to have a view of the path that will be followed, the Contrafforte Pliocenico Natural Reserve and many Second World War clashes areas. From there, following in the footsteps of Fantini, a fundamental character in the history of the Bolognese Apennines, the trail heads towards the valley. Before the end of the stage, there is the suggestive abandoned village of Gorgognano and, near there, a view of the site where a Pliocene whale was found , a place today celebrated by a sculpture that depicts it.