After the third and last stile you need to negotiate going N, before the first going S. Still wide views to the north, the Calf disappears behind as you descend for a while from here. Once over the stile you lose the wall and fence but the path is obvious, don't follow the sheep tracks to the edge. Sheep have no sense and have been known to fall off the cliffs, hence the ban on dogs.
The cache is another easy one; a stone should be hiding a non-stone, no gorse or briars this time.