User blog comment:Multimate pnd/Why does everyone take the long way?/@comment-4493594-20120229095547/@comment-4498721-20120229120645

I thought about why there's no height lines, that probably means it's not explored, at least not by some one being capable of drawing maps. Which is strange since people get in those canals but can't get on that part of mountain. East Blue canal is the shortest route but closest one to GL and except for the weather it doesn't seem like affected by GL (though weather is most likely because of the mountain itself, since it's basically another island in GL). And since North and West Blue is not any closer to GL than East Blue, I hardly think there's some bizarre condition caused by NW. Maybe it's something like the island Sanji and Zeff ended up, so it's not possible to explore that part.