The opening post describes exactly what happened on a recent Dihedral trip I was on, while I was rigging the deviations on the first pitch I was rather startled by the noise of a large rock falling down. Then another came down and I then thought that there was someone at the top throwing them down. If any more came down I was going to get out. Everyone else on the team was at Jib tunnel, thankfully my mate Matt went out and saw a teenager holding a large rock above his head. Matt said ?erm would you mind not throwing rocks as my mate is down there on a rope?, apparently his response was in amazement ?What! There is someone down there on a rope?!!!? So despite being with his dad he obviously wasn?t even aware that caving exists.