Meall Garbh (Càrn Mairg)

Meall Garbh, at 968 metres — "Rough Hill" in Gaelic — is the second Munro of the four-summit Glen Lyon ridge above Invervar, its cairn distinctively "decorated" with numerous old fence posts, with superb views north across Rannoch Moor to the Glen Coe and Ben Nevis ranges.

Reached from Càrn Gorm via a bealach at 851 metres at the foot of An Sgorr — a rocky, impressive-looking peak lacking Munro status, bypassed by most walkers on a path along its north-west flank — the route continues north-east up an open slope towards Meall Garbh, joining a line of fence posts coming up from the north-west partway up. These posts lead in an east-north-east direction to the summit, with Schiehallion looking particularly impressive to the north-east from this vantage point.

From Meall Garbh, a fainter line of fence posts continues east, cutting off a corner made by the more distinct line — useful to know in poor visibility when the more obvious posts might otherwise lead on a longer detour. This leads onward across almost flat ground towards Càrn Mairg, the highest and most technically demanding summit of the circuit, with the rocky flank of that mountain visible ahead.

The full four-Munro circuit — Càrn Gorm, Meall Garbh, Càrn Mairg, and Meall na Aighean — from Invervar is around 22 kilometres with roughly 1,476 metres of ascent, typically eight to nine hours.

The fence posts provide excellent navigational aid across much of this broad ridge, particularly valuable in poor weather or snow when the path itself and other features can be hard to make out — full hillwalking competence remains necessary given the sustained length and exposure of this circuit.

The Invervar car park is small and fills quickly; overflow parking is available around 1 kilometre further up the road. There is no public transport to the start.