An imbrex is the curved part of the ancient Roman roofing tile. The curves overlap the flat tile (tegula) to create a waterproof barrier without the need for sealants - kind of like what a feather does for its bird.
Hanging in my daughter's window, backlit, focus stacked and flipped.
10/1/2020: Finished year 7 (!), with continuing gratitude towards this amazing community. Based in St. Louis, MO. Regular worker-bee and self-taught photography dilettante....
