The children were having fun climbing on the fallen tree, but I'm not sure it was safe! In our local park it would have been roped off but not so here in Bedford. In fact we watched the chap in front lift his young child up into the tree and encourage into a position where he became unable to get down. The Dad had to go up to rescue him while we looked after the little one! (I hope no-one recognises these people)
Once upon a time we would never have worried about such dangers, but fortunately most of us are more cautious and sensible now. It does make a good photo though!
Ian