These puquio holes in the area famous for Nasca lines, Peru, are interesting. With no written text to explain, someone, Rosa Lasaponara of the Institute of Methodologies for Environmental Analysis, in Italy, finally figured it out: They channel wind into underground tunnels, which brings ground water up to the surface for people to use. From a barren desert that can see no rain for years, to a livable habitat. This is brilliant.
The ancient Peruvian mystery solved from space Smart people.