Note:
Unlike the image name would imply, there is no shadow visible in the image that would qualify as a "Brocken specter" (not even when heavily tuning the image contrast and colors). As the used zoom factor of the camera is not documented its assumed that the ogject appears larger than it was in reality, thus eliminating the option for this beeing a rainbow (abt. 2x42°, hard to catch with any consumer scale wide angle lens) but making it a rather reasonable candidate for beeing a larger glory (abt. 2x5° to 2x20°).