These unusual images are made using the  ORBIT TRAP  method, where the trap is a GIF format image with a transparent background.

CLICK:

• on PICTURE for an enlargement.
• on EXPLORE link beneath picture to see it in the JavaQuat applet where you can zoom
  in, out, etc. Just drag the mouse across the section of the fractal you want to enlarge,
  then pick Start from the DRAW menu.