This image shows three different faces being drawn with single line. This demonstrate that even though the art work is composed of one line, you can still make out of what it is trying to display.
'Little City' by American artist Laura Charlton. Monotype, handpulled print with cardboard boxes, 13 x 20 in. via exuviae on Etsy
Garden Vegetables - original linocut print by Jon Spooner and Sarah Gregory