Where are iOS7 system wallpapers?
/Library/Wallpaper is a symlink to the relevant location on the device.

The actual location is /var/stash/Wallpaper.xxxxxx/&lt;iOSdevice&gt; with xxxxxx being a generated string and &lt;iOSdevice> being the type of iOS device (e.g. iPhone). The wallpapers are contained within this folder along with the thumbnails.