Did you ever wonder when contour lines were used for the first time? Karen Rann investigates the invention of contour lines in The Great Lines Project.

Contour lines. Photo by Karen Rann.

The website thegreatlinesproject.wordpress.com explores the first maps to include those tentative lines that expose a quality of our world needing to be understood, to be calculated or defined, through the use of a line or lines which are not visible within the landscape because they are not there.

Please also note Rann’s exhibition devoted to the development of contour lines, currently open at the Literary and Philosophical Society in Newcastle upon Tyne, United Kingdom. More details about the exhibition can be found in our event calendar.