Updated SR reminded me of something...

I thought of the world of One Piece: North Blue, East Blue, South Blue and West Blue. (North, East, South, and West areas of map)

Then we have the Red Line (mid lane) straight across the map and the Grand Line (river) perpendicular to it.

Even the second half of the Grand Line is more difficult than the first half (Baron in top half of river and Dragon in the bottom half).