The Nazca constructed a highly sophisticated irrigation
system, specialy designed for their surroundings. Between
January and April the
rainy season started on the plateau.
Rivers brought water to the valley. A large part
of it disappered into the soil and flowed by way of
geological fractures to another territory. Where
the Nazca lived it was very dry. That's why they dug
trenches and tunnels (puquios) to get to the water
under ground (water would be drawn off and stored for
irrigation purposes). Nowadays there are still some
29 in use, in the Nazca time there were surely more
than that. These "aqueducts" were about 1
of the tunnels were at that time lined with pebbles
and grit; nowadays with concrete. Onze above ground
the canals were covered with stone plates or tree trunks
to prevent the water from evaporating.
tunnels were cleaned each year. For this purpose they
made funnelshaped holes (ojos) in the canals.
The first puquios are
probably constructed in the 4th century aD, after the