For about 100ft darkness with a few very small patches of remaining snow faintly glimmering - shadows of light rather than shadows of dark. Raising my eyes gradually, the darker than shadow outline of tree trunks for about a hundred feet down the gradual south slope that is my yard, then, under a streetlight across the road, a just as slight north sloping yard still completely snow covered and a brightly lit tree trunk of what I know to be a large old oak. The large old Southern Magnolia I know to be standing just 15 yards east of the oak is completely invisible in inky blackness, unless one notes the ragged contrast of the edges between snow and blackness under the streetlight, and happens to know what causes that contrast.

Lovely thread.