But Dufour maps use "hachure" [0] lines for relief, not this type of shading, I think. [0] https://en.wikipedia.org/wiki/Hachure_map?wprov=sfla1 https://en.wik

But Dufour maps use "hachure" [0] lines for relief, not this type of shading, I think. [0] https://en.wikipedia.org/wiki/Hachure_map?wprov=sfla1 https://en.wikipedia.org/wiki/Hachure_map?wprov=sfla1