This is one of Axel Erlandson´s "Circus trees". This "basket tree" was formed by grafting six Sycamore trees together in a diamond pattern. Check out the Wikipedia article to find out more about these unique trees!
Most of the he pictures in this blog are images that are listed in Flickr under the "Creative Commons" license for non-commercial use. All of the images are linked to their original Flickr pages where more information and comments can be found. There are also links to the photographers profile page on Flickr.