Line: This represents line because of the way they use the thickness and thinness to put together a piece, and if you look closely you can see what looks like a face. The image uses different line qualities to give the effect of a realistic image.
This one has a deeper meaning and I love it. Just simple lines but the ones closer together give a sense of a dark emptiness or void.While the lines farther a part forma what looks to me like a door. A way out, an escape route.