Yes. Sorry, I wasn't clear. Intellectually, I understand what's intended, but the visual effect of hills and valleys however is very strong and hard to ignore.

Yes. Sorry, I wasn't clear. Intellectually, I understand what's intended, but the visual effect of hills and valleys however is very strong and hard to ignore. I can read and understand that the dark lines on Greenland are isoclines, but having an intuitive feel for what these patterns represent is elusive. The visual idioms of light as height and dark as depth is probably too entrenched for me.