>I know, as climbers, we certainly accelerate the erosion but these places
>are falling away on their own too - I remember being
>amazed at the same "dirt line" and that I couldn't reach the "S" at the
>base of Sizzler (Coke Ovens).
Richard - is that the one where the line is also visible on the FA (or therabouts) pic in one of the guides (Penney's?) I remember thinking something similar myself. Cliffs and clifflines are by their mnature high erosion areas. The Wolgan of course had 80 years of industrial assistance !