I'm trying to learn my way around Silver Efex Pro 2, so the following is submitted for C&C.
This was taken from the bomb bay of a Boeing B-29 Superfortress, looking thru the pressure wall window up to the top gunner position. It occurred to me that I recognize almost nothing in this image, which reminds me of just how fragile the past really is. Our real understanding of it does not survive even a single generation.