Whenever I would be out on an assignment to photo-document in a rural area of historic interest, I would take a few moments to put my eyes and mind in a frame to spot ^archaeological shadows^, left behind by the passage of man: fire pits, hastily-built fortifications ditches, low mounds (burials), etc. The same idea applies to spotting the faint rectangle left behind when a window would have been removed and filled in, particularly on a house with a stucco exterior: an ^architectural shadow^. Place your mind in that frame and look close in areas like this, Bruce, and you might just see trackways left by animals in a prehistoric era. The fossilized depressions of long-dead aquatic critters may be there as well. Just a thought.

-nik (looking forward to the others you mentioned)

What a terrific post, I really like your editing on this one.
tigs=^..^=

Excellent ! I love all the different textures and light.

Bruce, I knew Mother Nature is versatile. But I couldn't have imagined that her versatility would also apply to the creation of such natural contemporary art.
A natural abstract, perfectly captured by you, Buddy