Contour planting involves tilling, discing, and otherwise preparing the land in line with its natural slope, then planting crops on this same line. When you look at a topographic map, the rows and/or ...

This lithograph print of The Scream (Edvard Munch, 1895) is entirely made using actual lines. Contour lines show the figure and its expression as well as outlining the bridge, the land, water and sky.