In the photo above, I shot this self portrait as a group of tourists and myself boarded a Cessna at the small airport near the town of Nasca. The guy next to me was a police officer from Wales. It was his first trip in a small plane.
The plane rose steeply out of the green, Nasca Valley. The desert is watered by runoff from rain and snow, high in the Andes Mountains to the east. These valleys that are connected to the distant Andes have been cultivated since long before the rise of the Inca civilization.
In the upper left of the photo, there is an observation tower next to the car, for people who dont want to fly to see the lines. I wonder if the erosion evident in the photo, preceded the tower, or is a result of it's construction?