All locations in game seem to be defined by 4 numbers <zone#> x/y/z. I get how the x/y/z works its a simple coordinate system, but how do you effectively navigate from one zone to the other?

I tried using just the XYZ coords (assuming that the coord system was world wide) of my perspective new tribe but that lead me to the middle of the lake. But changing zones doesn't seem reset any of the coord counters. Best I can tell the 2 location system (zone and XYZ) aren't related to each other in any obvious ore meaningful way?

I'm not complaining in fact part of me actually likes the difficulty I'm having with navigation, it adds to the feel of a unknown and trackless wilderness. But if I'm missing something obvious I would like to know.