Extremely rare head halo image on a road. Halo images are created by tiny ice particles in the air and a head halo is only seen by the person casting the shadow. They rarely occur, but when a halo image occurs, it is usually seen surrounding the person's head shadow cast onto a valley below the person that is covered in cloud or fog (in German this cloud is called a Nebelmeer - literally a sea of cloud). I have captured this phenomena against a sea of cloud a couple of times. I have never before seen it occur onto a road surface in summer. What a heavenly phenomena! © Copyright images by Han van Loon.