and i'm edmund le brun. down the length of the hunza valley in pakistan. as far as we can tell, no—one has done this before. the river passes through a really interesting part of pakistan, right up in near the border with china. it is a very ancient trade corridor that passes north—south, the old silk road, mountains, people, history, culture, it's a fascinating place. when we set out, it was late in the day. we were a bit distracted, because we had people from the local police force along the banks watching us. thanks again for your help, and i think we go through the water now. and the water at this point, it's going pretty swiftly, and so we nudged our boats out and just managed to keep a straight face, without too much screaming. we were there on a river which supposedly hadn't been rafted before. that feeling of independence wasjust fantastic. i think that travelling by raft, you slow down. you see things that you might not see otherwise. and there were moments when, on the river, we were caught between