Parallel Lines Meeting at Infinity

  We've all seen rays of light fanning out from the sun at dawn or dusk.  But that's not what the photo below is depicting.

  The photo was taken Saturday afternoon but not toward the setting sun in the west.  On the contrary, the camera was pointed east, in the opposite direction from the descending afternoon sun.  So what are the rays we see in picture?  They are anti-crepuscular rays, the parallel rays that had emanated from the sun, passed overhead and are seen  meeting at infinity 180 degrees from the sun.