Please note I split my post and moved part of it below Nogrod's.
As has Arry moved his SAVE again, I see.
As he said, the group is just coming up to (notes it in the distance) the area called the Sarn Gebir where the river cuts a deep channel and the cliffs rise high above it.
We should be about where the 'R' is in the 'GREAT' of GREAT RIVER