Output Stream of Consciousness

There was an interesting phenomenon that took place on the horizon opposite the sunset when we were leaving the Masai Mara game park one evening. It was a stark diagonal band in the sky, that resolved itself into a couple of bands a little later.

Dena followed up on an "Astronomy Picture of the Day" picture today which looked rather similar to the phenomenon we encountered, and after some digging, she found out what the effect is.

They are "anti-crepuscular rays", and they're caused by the sun shining through and being blocked by clouds and holes in the clouds. The diagonality is just a perspective effect.

They look quite pretty :)