> the light comes from North West, which is impossible in the northern hemisphere
that is technically not correct, in the summer for sufficiently high latitudes, the sun sets in the northwest.
that is technically not correct, in the summer for sufficiently high latitudes, the sun sets in the northwest.
The point in the linked article is that the grandseigneurs of Swiss topography didn't like that the usually sunny and warm south slopes show up dark and shaded in the map (and the other way around). They felt this to be unnatural and an error to be corrected. That was back in the 1920s and obviously has not been changed.