Here are some good collection of High Definition and High Quality Nature wallpapers.
Some of These photos actually taken in Japan.
You can download each of these wallpapers free.
Just click on the link below to access my Piccasa web albums and there you can download them to desktop.
You can see hundreds of images in addition to these, at my Piccasa Web Albums.
ALL HD Nature Wallpaper collections.
HD Nature wallpaper collection 01
HD nature wallpaper collection 02
HD Nature wallpaper pack 03.
HD Nature wallpaper collection 04
HD nature wallpapers pack 05
Digital Japan Wallpapers