I solved this puzzle by going...
in four different directions !
Daniel S already solved the first part so we just needed to solve the bottom part :
The  can be replaced with 0 and the | can be replaced with 1. So we have :
And the next step :
We can convert the binary numbers to decimal numbers :
To get letters :
We put spaces in the right places and convert the numbers to letters with a1z26 :
By using the path found by Daniel S, we have the answer :
IN FOUR DIFFERENT DIRECTIONS