I duplicated an image & stitched it together then with the below technique used to to make a circle.
Because the center was a big boring hole I pasted an image of a rat on a pumpkin then used Mehdi Kaleidoscope to mirror the image.

Used extruded pyramids at bottom.

Transforming Panoramic Space into a Circle - http://www.featurepics.com/editorial/rectangular_to_polar_transforming.aspx

Flo