Well It´s no to hard know where is the south if someone explains to you but I´ll try to explain the basics.
1rst Graphic bug:
To know where is a "pure" direction just wach to the floor, you can see lines maked by "cloned" textures.
on the next screenshot I´ve marked the lines, try to see that I want to explain
Same example but waching to east:
with green lines:
Using the Roman Power Jump I taked this pic, you can see the clonning textures that I reffered:
Ok I hope that all is understood.
Now I try to explain where is the rudder points, if youre waching to the north, the south is on your back, the east is on your right and the west is on your left.
Then... This is a pic of the South mountain:
But is just a reference point because the "pure" south is on this mark:
Now you can know where is the others directions...
A idea to where is the "pure" east
Mines trowbles:
How to go directly to the mines and back directly to fort:
To go to the mines see to the west this mountains and go directly to the pick marked.
To back from the mines to fort, find this "valley" and go directly to it