Nature Wallpaper Pack is an excellent collection submitted by dreamerseven.
Preview and download Nature Wallpaper Pack
Nature Wallpaper Pack is available in:
A widescreen (1920 x 1200) format and of 1600 x 1200 dimension. You can use them for you Windows 7 PC, Linux PC or Mac. Resize in any image editor if you have smaller screen.
It is a ZIP download, the file is 14.2 MB in size, contains multiple excellent nature oriented photo wallpapers.