I share with many a concern that we are over-protective of children these days. Some people won't even let their children camp out in the back garden in case an evil lurker gets them. Statistically this is ludicrous. They are much more in danger every time you take them near a road. However, we shouldn't totally ignore risk either. I have to confess I did something with a group of teenagers many years ago that still gives me a cold shudder when I contemplate the dangers involved. I had done some caving while at university, and when the youth club I helped run went on an adventure holiday (this was a few years later) I offered to lead a caving experience. This was straight caving, not potholing, I should stress. I picked three caves out of a guide (I think it was the one illustrated), all easy. The first was very straightforward. A little narrow in places, but basically a straightforward walk into the hillside. The most exciting thing was getting there by car as it meant goi...