What Do Hachure Lines Indicate On A Contour Map?

What Do Hachure Lines Indicate On A Contour Map? [symbology] On a topographic map, concentric contour lines drawn with hachures to indicate a closed depression or basin. Concentric contour lines drawn without hachure marks indicate a hill. What do contour lines represent? A contour line is a line drawn on a topographic map to indicate