What's casting the vertical shadow (arrow) on his neck?
What's casting the horizontal shadow (arrow) moving downward from his face?
Shadow only on his right side, while the left side of his neck is in direct sunlight along with his ear.
It's just his own head blocking his right side from the sun.
As that same man puts his head down the very tip top of his it's western side(perhaps) enters the shadow from the wall.
That's not too far from Wiegman's Lovelady.