Perhaps it’s because I used to be a cyclist. The most common injury in that sport is a broken collar bone, caused by the impact taken by an outstretched hand travelling up the bones of the arm until it reaches something more slender and fragile. It certainly sounds a better idea than my version which was to land at 20mph on my mouth many years ago.
Anyway, whatever the reason, I love well-defined collarbones, especially when their lines converge with taught neck tendons. So as I waited to see what the dramatic lighting of the sottoportego would deliver for me, this young woman threw her head back to check out the same light. Shame about the hand gesture and facial expression. It was nearly something.