Tallest peak and lowest valley?

[Titanas]

Having experience as a world designer 0,0,0, is just where the artist puts the pen to the paper. That is why each zone doesn't really have much structure with the locations. I haven't done a /loc in the hole but I wouldn't be suprised if z=0 was down in the town area of the hole. and the entrance is z=2000 or something.