Unfortunately much of the snow cover had melted from the lower ridge, and underneath the snow the ridge consists of horribly loose volcanic rubble. This nasty-looking slope is what we had to climb up and across in order to gain the ridge crest. We stood here for a few minutes contemplating the debris that had evidently fallen from above, then unroped and crossed one by one, moving as quickly as we could. I was halfway across when Chris shouted out and I looked up to see beach-ball sized rocks tumbling down towards me. I jumped out of the way as fast as I could, but not quite fast enough to avoid some glancing blows. Fortunately the only damage was a couple of minor bruises and a broken wrist-watch strap.