What do contour lines help to define?

Contour lines are essential in illustrating the topography of a landscape by connecting points of equal elevation. They indicate how the land rises and falls, providing a visual representation of the terrain's shape. When contour lines are utilized, they reveal the edges and surface ridges of both natural features and man-made objects, allowing for a more comprehensive understanding of the overall landform.

In architectural and landscape design contexts, these lines help designers understand the inclines and declines of the site, which is crucial for effective planning, drainage, and overall usability of the land. By mapping out the slopes, designers can identify strategic locations for structures, pathways, and other elements while adhering to the natural contours of the land. This information is vital for achieving harmony between built environments and their natural surroundings.