Corren makes his way down the eastern corridor which extends for forty feet before taking a ninety degree turn to the left, it goes for ten feet before a corridor that heads east intersects with it. Corren is at the intersection and can go right down the east corridor or continue north. Both corridors extend beyond Corren's torchlight.
After approximately thirty feet Corren has the option of turning right and proceeding down a southern corridor or continuing east.
Out of Character: : I have uploaded a basic map.
Out of Character: : Thanks for the map!
In Character: :
In keeping with Leo's theory that they should be moving away from the entrance, but avoiding the main tunnel, he will make sure the others see him turn right and continue south, paralleling what they assume to be the main line.