How do lines that look like they meet far away make a road or a hallway look super long and deep in a photo?

Lines that appear to meet in the distance, though they are actually parallel in reality, create a powerful illusion of depth in a photo. This visual phenomenon is known as linear perspective. In scenes like a road or a hallway, the parallel edges—such as the sides of a road, or the lines where the floor meets the walls and the walls meet the ceiling in a hallw....