Anyone know if 1 or 2 is correct?

1 is from a map people claim is the best asoiaf map, but I haven't find a good source for the wall angling down that much there.

Been looking at maps to try to put it on a globe to get a better understanding on what is probable and possible, and the wall is good unit of measurement.
Seen some other people do it, but I found them missing some key points.