The last time I suggested, even mildly, that the cave be gated on a Derbyshire Key system (there is another, easy crawl entrance), I was shot down in flames - though that was before this happened. Never mind the cave being used as an open toilet by all and sundry. The landowner, the National Trust are now considering a gate, which is progress of sorts, I guess. My first suggestion was a two-foot thick reinforced wall, like Wapping. My favourite option would be to unblock the top entrance (higher up the hill), at the same time, and put a grille on it, and then cavers could actually do a through-trip. Unlikely though, but from experience, the Dark Peak office are certainly a positive bunch, and are very interested in this aspect of their land.