Park in the car park of the pub beside the disused petrol pump in the centre of Ballyknockan. With your back to the pump walk forwards (south east) up the side road and take the first right turn.
At next fork veer left and follow the hardcore track into the forest. Continue along forest track as it curves to the left.
Eventually this leads out onto the mountain side south west of Silsean. Follow faint track through heather. Much of the track is boggy and would be easier to negotiate in cold weather. Keep an eye out for deer in the distance.
The track leads to the summit of Silsean, which is now very boggy, but solid in cold winter weather. Avoid the numerous bog ponds and peat hags as you continue onwards to Moanbane.
The descent route chosen from Moanbane is pretty fast but not steep, and quite dry, heading towards the col with Silsean but then descending quickly west over low heather and grass, taking in good views of the reservoir. Contour along the (unmarked) boundary of the National Park, then continue west aiming towards the old school parking area with its 2 granite tables and benches. This follows commonage but may veer into private land just before reaching the road. Stay clear of any livestock (sheep), hugging the field boundary and climb the gate beside the small concrete shed at the car park. If in doubt look for permission.
A dirt track (public - confirmed by local) leads south-west from the old School to the village centre and your vehicle.