|Diamond Dust, Switzerland
Willem Koppenol captured the scene at Braunwald, altitude1382m.
Diamond dust, whose individual crystals glinted brightly and speckled the larger image, created the below horizon halos. A 22° halo is touched at its lowest point by a lower tangent arc. A rarer arc was visible but that deserves an OPOD all of its own.
©Willem Koppenol, shown with permission.