The two smaller collections of Early Agropastoral sites in the Block 2 are grouped as "Pastoral Camps" and "Rock shelters". These sites consist of small enclosures and limited surface expression of ceramics from the Formative Period. The rock shelters often have geometrical, abstract parietal art on natural walls drawn in ochre. Often these sites will also have colonial rock art, typically Christian themes (such as the cross, or a Virgin Mary) in ochre as well, but these were excluded here from this review of prehispanic sites. The smaller sites could have been day-use areas as part of a strategy to distribute the impact of grazing. The rock shelters were generally small and may have been day shelters from weather as well as night shelters for very small groups.