"Minty-Dunes" is a 1920x1080 resolution Blender rendered Cinnamon Mint Logo wallpaper
Shown with Desert_Camo theme found here;
The Mint logo was created by Clement Lefebvre
It was uploaded under the Creative Commons license at: http://linuxmint-art.org/content/show.php/Official+logos+(white+background)?content=123381
The website clearly claims that it is being distributed under the Creative Commons license.
The text of the license on the website is linked to a creative commons page with information about the Attribution 3.0 License (In German).