In reply to dakidunn:
Just to clarify, the damage done here could end up being significantly more than visual. This crag is made of sandstone which is a sedimentary rock and when the harder, outer "crust" is damaged, it exposes the non weather worn, inner grain matrix structure.
This newly exposed inner is a much more permeable material and is susceptible to water, frost, salt and acidic damage. As the outer is less vulnerable as it's structure is different, the rock can erode unnoticed from within and spall.
This can mean holds/ledges/flakes etc could crumble and the consequences of this could be severe. It appeared to me by the marks left, that these people were novices as if they'd been any good with crampons, they'd have made significantly less of an impact.