In a recent conversation, a colleague wondered where the Windows 7 rock formation landscape wallpaper was taken. The picture itself (C:\Windows\Web\Wallpaper\Landscapes\img7.jpg) only credits the photographer, and shows that it is a stock image from Getty Images.
Browsing through the Getty Images website, I came across this picture.
Same exact location, but different photographer.
And this is the actual picture used in Windows 7.
The pictures show where they were taken: The Vermilion Cliffs Wilderness in Arizona, near Page, AZ. The Wave, what somebody suggested as location, is part of the Vermilion Cliffs Wilderness.