Here is my contribution that I took this summer in North Wales, UK. It is available in several standard wallpaper sizes: [Just right-click and "Save Target As..." (or Firefox/Chrome/Safari equivalent)]

pixels (approx screen size - you may want to check anyway)
800x600 (?)
1024x768 (15" screen)
1280x800 (10-12" laptop)
1280x1024 (17" screen)
1920x1080 (1080p HD screen)



Preview: