Hiking boots.

Go through the gate about 100 m west of the monument at Flynns grave, and follow the path that leads generally west. If you miss the path continue west until you meet the old fence that runs north-south due north of the summit. Follow the track along the fence south to its southern end. From here on the path is well-defined, though in places there are alternatives. The path goes over a saddle on prominent spur north west of the summit and then climbs up to a small gully that provides a way up through the cliffs. A short scramble up the gully leads to the ridge. From here it is an easy walk east to the summit cairn.

Hi, Technically camping is not permitted on the top of Mt Gillen, as it is not in any way a designated camp area,having said that people have done it before, if you carry some light camping gear up and are prepared for a windy night there is no physical reason you cant camp there as it is not patrolled, your car is in more danger of being looted in the car parking area at the bottom of the mountain overnight so if you can get a lift to the car park.Also please do not use any sort of fire up there, even a small gas burner, as there area is covered with very dry grass and one spark would send the fire all along the range,(you cant use your burner in your tent either) then you would defiantly draw some attention,Also the ground is rock, so there is no place to bury your waste, so that will cause problems for a long time and the Dingoes will spread it all around, not good, last thing you will be visited all night by inquisitive Dingoes looking to steal anything that they can, and they will nose right into your tent if they can, which might interrupt any chance of getting a good night sleep. I would not camp up there. Plenty of better camping in the West Mac Donnell Ranges