This article showcases an amazing mural in front of the Montreal Museum of Fine Arts in Canada. Although in reality, it is completely flat, the mural manipulates undulating lines, shading, and strategically placed shapes to its advantage in order to mimic the topography of sand dunes with peaks and valleys. This optical illusion was extremely interesting, as simply viewing the mural from a different perspective would drastically change your view of the contour (or lack thereof). As we work in Photoshop and Illustrator to produce complex projects – often mimicking 3D life on a 2D screen – this use of lines, shading, and other elements to manufacture depth and perspective is both perplexing and engrossing.