Want some digital wallpaper, just for fun? Here it is, in a variety of sizes. The original photo I started with is shown as well. The photo credit goes to Alberto Restifo, used under Creative Commons Zero license.
1936 x 2448 px 
1168 x 1424 px 
1040 x 1535 px 
1024 x 1024 px 
Unsplash Original 
the above is the version I use with my cranky iOS 7 on iPad 2