The LA Times is currently going through 100 facts for 100 years of Machu Picchu. It is a lot older, but its existence was revealed to archaeologists in 1911, so this summer marks the 100th anniversary of work at the site. Exactly what the site is has been debated for many years. Current favourite is that it was a royal estate, but this does not rule out important ritual functions at the site as well. This is the view most people try and take of the site towards the peak of Huayna Picchu, which also has temples on it, so it is possible that Machu Picchu was placed intentionally at a specific point in the landscape, in this case about 2.5km or 1.5 miles up in the landscape.
The ability to farm at high altitude might be due to the llama’s habit of defecating communally, according to a report on the Guardian website. This made the llama dung easy to gather and then use as fertiliser.
As an experiment, you can download wallpapers for June based on this photo in 4:3 or widescreen formats. I’ve prepared them at hi-res, so they may need to be scaled down to fit your monitor. Let me know if they work in the comments below and I can produce more for July onwards.