After following the thread and seeing evidence of trail concret’ing in Sai Kung, I should also like to add that AFCD is not to blame (all the time). Discussions should also be made with Home Affairs Dept (HAD), Water Services Dept (WSD) etc since many of these projects stem from District office level, without any considertaion to the environment. The good news however is that, if one can raise an objection and assist the involved department (if it affects a trail or stream etc) at an early stage, then fundamental improvements can be made to the design etc. A case study is the Sai Kung Association and a new road being re-designed with footpath and cycle track along a short stretch of stream.