Slieve Muck is a broad, rocky hill to the west of the Silent Valley in county Down. Like a lot of the Mournes it has a network of high walls tracing across its upper slopes making for easy navigation. It's a good vantage point on a clear day to see much of the Mournes range incl. some of its fine valleys and reservoirs. Further afield lie the Cooley and Sperrin mts.
W. Park at J27115 25243 A where there is room for 5-6 cars. Cross the road and over the wall on the far side heading generally east then follow the stone wall uphill until it meets the main Mourne wall near the summit which is marked by a trig pillar. Allow 45mins
N. Park close to J28010 27857 B and head for the NW spur of Ott mountain. From Ott head for the main wall on Carn Mt. N Top and follow this south to Muck passing Carn mt. en route. Best to leave Carn on the north side of the wall to avoid a potential impasse on its southern side at J28420 26005 C. Allow 2 hrs. Either retrace your steps or make your way down to the road on the western side and walk north back to the car,
S. Park at approx. J28441 21414 D and walk up the Banns Rd. to J29280 23750 E. Follow the wall NW from here for a little under 2km. The going is wet, steep and pathless in places but great views open up as you ascend. Allow 90 mins.
From this same parking spot you can also walk north about 1km up the B27 and ascend steeply via the S spur.
Notable tracks include track/4299 and track/4393 both of which can be easily adapted. Linkback: https://mountainviews.ie/summit/151/comment/4911/