This is a satellite image of the Syrian Desert.
Nasa's Earth as Art website is a treasure trove 0f stunning images taken by Landsat-7. All are free to use and most can be downloaded in high resolution .
The Malaspina Glacier, Alaska
I use them for computer wallpaper. And for anyone that wants to try their hand at abstract painting, these are pretty good sources.
Come to think of it, this could be titled "Everyone's an Artist-Part 2"