The Puritama Nature Reserve has significant material remains left by humans in the past, especially on the slopes of its gorges. This is an indication of significant traffic by caravan groups passing through the area, taking advantage of the river water to stock up and thus continue their journeys.

The times of transhumance, a period of transition between the archaic and formative periods (1500 BC) when people began domesticating wild camelids, marked the start of long journeys seeking to connect the highland regions with the coast and created a sort of “barter road.” On the way, different types of plants, animal and stones unique to each area were traded, giving rise to a pastoral lifestyle in continuous movement.