This photo was taken in Cholula - Puebla (Mexico) from the top of a church situated on an Mayan pyramid. It shows a lovely panoramic shot of Popocatepetl, a volcano that is the second highest peak in Mexico, and is still quite active.
This Popocatepetl volcano wallpaper is 1024x768 pixel sized. However, if you require another size for your system, several are available to download, for free, from the author`s website.