Complex sentence: Below the large stone cross, there is a way down to the bottom of the small cliffs and there is some climbing there on the faces mainly bouldering as it is rarely scaled so there are no fixed anchor points.
Split into simpler sentences: Below the large stone cross, there is a way down to the bottom of the small cliffs and there is some climbing there on the faces. Mainly bouldering as it is rarely climbed and so there are no fixed anchor points.