cross the river using the fence and then keep it on your right. You drift quite far left away from it across a juicy bit of ground towards a knoll in the distance. It looks too far left but it's not. Once around this lump in drops a few metres into another juicy bit and then climbs up, I think there is a fence or post to guide you. From there it's a drop down to the back of the youth hostel on the capel curig side