crepuscular rays

Hello! First post. I lurked a bit and this forum looks very interesting for me... I have had a look for this info here but haven't found anything yet, as a Noob, I'm sorry in advance if this has been discussed already... damn let me edit, of course this image is broken.. OK. We know that...

A friend who believes in chemtrails sent me this photo for an explanation. I would guess that it is either crepuscular rays, http://en.wikipedia.org/wiki/Crepuscular_rays ,or an artifact of imperfections in the camera...