There really isn't much on the Salt Flats in Bolivia, just a lot salt mostly. As the worlds largest salt plain it's where sataellites calibrate themsleves so they know exactly how far they are from us!
So coming across someone else in the middle of this vast expanse is always a bit different to meeting another person in other environments. I asked if I could take the shot by gesturing at the camera and she seemed to raise an eyebrow as if to agree. After that, she just stared with a kind of a 'get on with it and then go' expression about her.
As a photographer you're always aware of backgrounds and it's great to be able to get such an engaging portrait without having to worry about clutter creeping in to the frame.