Released by the Balteo glacier during its withdrawal (approximately 18,000 years ago) has a rounded form and at the centre a large oral cavity. Around it there are dozens of deep cup marks connected by a system of containers, some of them communicating with the central basin.
Based on the must recent publications (*), scholars attribute a cultural function to the rock, this fits quite well with the information know to us related to religious activities of the indigenous populations living in Piedmont between the end of the Bronze era and the Iron Era (between X and II century before Christ)
The artifact, which can be considered very important from a historical and scientific point of view due to its uniqueness, is inside an oak forest on the slope of a morainic hill that divides the territories of Cossano and Borgomasino, in a town called Lusenta.
For information guided visits see www.gruppoarcheologicocanavesano.it