Trevor leads the way as you split off from the main road well before reaching Nulb, angling eastward toward where the Temple lies. The going is rough...thick shrubbery and undergrowth, copses of tangled willow, oak and elm trees, small streams and marshy areas, and the occasional hill and bluff are all much slower to traverse than the road. And unfortunately, if anyone is following you, there is plenty of cover for them to remain hidden.
After many hours, you come over a bluff to realize why the road travels through Nulb: the Imerdys Run. While not a mighty river like the Velverdyva, the Run is very fast flowing and at least thirty feet across, with steep embankments on both sides.