A rough poled route heads down the valley from Boyd Lodge, passing the airstrip on the western side. Poles are sporadic, and it is possible to lose the track across open low tussock.
The track crosses the Ngaruroro River (less than knee deep, 3m wide, but could flood easily after rain), and passes below a steep truncated spur of vertical river gravel. Soon beyond a metal signpost on the eastern bank marks the turn east out of the valley to Tussock Hut. This is the start of a 2m wide Kaweka 'highway' - a well maintained cut, marked track through first Manuku scrub and later beech forest. This climbs gently to the summit before dropping into the head of the Harkness and exiting the beech just above and opposite Tussock Hut, Poles lead the lad few hundred meters to the hut. 1h45-3hrs