Yesterday I used dlike to share an article I read about how in some areas the extremely dry weather has unveiled ancient marks on the ground... It was a very interesting article about human activity fort building and agriculture - I hope you get the chance to read it. The article jotted my mind about some of the (many wonderful) things I saw from the plane on my way back from South America, December time, a couple of years ago.
Here's another photo I took again on my mobile :
To be honest I am not entirely sure where we were at the time possibly on route to cross the Andes, but I might be slightly off course as my geography often fails me.