![[the image described here]](0132-Wall-of-Severus-near-Housestead-Northumberland-q75-500x375.jpg)
This picture is a wood-engraving originally printed in black ink on paper, originally in a book about England. The computer image here is black and white (actually greyscale). Like most wood engravings, shading is accomplished by lots of finely-spaced parallel lines.
In the picture a thick wall made of unevenly-sized stones runs from the foreground at lower right of the picture into the background at upper left, rising up over hills and down in valleys, and with a couple of breaks that appear to be from ruin. The wall is perhaps six feet (two meters) thick and seven or eight courses of stone high, probably around four or five feet. The viewpoint is above and to the left of the wall, so that we look down on it somewhat.
In the foreground at lower left two people wearing smocks and broad-brimmed hats face one another, leaning on sticks. Perhaps they are shepherds. We can see that if we include the two feet or so of earthworks at the foot of the wall then the wall is taller than the people, but the stone part by itself is not so high as the people.
There is a third person, similarly dressed with a broad-brimmed hat but with a cloak rather than a smock, laying or sitting on top of the wall.