The easy walking track to Donnelly Flats only takes 1 hour, passing through some of the best mixed podocarp/broadleaf forest in the Tararua Forest Park.  

Cross the Atiwhakatu footbridge and follow the relatively flat track to Donnelly Flat, with access to Atiwhatatu Stream, then loop back to the Holdsworth car park via the foot of the Gentle Annie Track, where you'll see impressive rimu, miro and northern rata tower over a canopy of kamahi, red beech and silver beech.