 The best known site of this tradition is in Baviácora, in the municipality with the same name.Towards the northeastern end of the state, in the river Bavispe, Bacerac, Huachinera and Sahuaripa basins, are communities very similar to prehispanic sites as Casas Grandes, although it seems to constitute a different tradition which might be termed Carretas.These little hierarchical settlement societies combined occupation of villages on river terraces with adobe houses in caves, possibly for winter use.