Creag Mhòr reaches a height of 1047 metres and qualifies as a Munro and a Marilyn. It is commonly climbed with the neighbouring Munro of Beinn Heasgarnich, which stands 3.5 km to the NE, the two mountains form the high ground between Glen Lochay and Loch Lyon. Creag Mhòr is one of the remotest of the southern highlands being situated about eight kilometres from the nearest public road, it is surrounded by other high ground which make it difficult to get a good view of the mountain from any valley, and the best aspect is obtained from the surrounding peaks. The mountains name translates from the Gaelic as “Big Rock”, an unusual name for a hill which is mostly grassy, however its top has craggy areas and the name refers to a series of rocky buttresses near the summit.
Geography
Creag Mhòr is composed of three ridges, the ESE ridge descends to Glen Lochay at the habitation of Batavaime and gives the usual route of ascent from that glen. Another ridge also descends to Glen Lochay, this initially goes south from the summit before swinging SE down steep slopes, which need care, to reach the glen. These two ridges enclose Coire Cheathaich, a former royal hunting ground which was made famous by Duncan Ban MacIntyre, the Scottish Gaelic poet who worked as a gamekeeper in the area. He wrote the poem Òran Coire a' Cheathaich which gives a natural description of the corrie and its flora and fauna and includes the line "'S rìomhach còta na Creige Mòire". The south ridge includes the subsidiary summit of Stob nan Clach which is listed as a top in Munro's Tables and is reached from the main summit by contouring round the head of Coire Cheathaich for a kilometre. A third ridge on the mountain goes north over the 895 metre subsidiary top of Meall Tionail before dropping down to Glen Lyon. This north ridge can be used for access to or from Beinn Heasgarnich, as the ridge can be left after a short distance and Heasgarnich can be reached by going east over the boggy Bealach na Baintighearna. All rainfall on Creag Mhòr drains to the east coast of Scotland at the Firth of Tay, either via Glen Lyon or Glen Lochay. Meall Tionail has an unusual geographic feature on its western slopes, it is marked on OS maps as Coire Chirdle, however it is not a corrie in the usual sense as there is no hollow cavity in the mountain. Instead there is a clearly marked semi circle called an scarp below which is a bulge. This was probably created after the last Ice Age when the unstable hillside saturated by meltwater slipped down the steep slope. The nationally rare plantBartsia Alpina grows on the slopes of Creag Mhòr, it is found as high as 950 metres, the highest occurrence in the U.K. It grows on brown loam soil on the mountains alkaline mica-schist rock.
Ascents
Creag Mhòr is a rather isolated mountain and approaches require quite long walks to reach the foot of the hill. Ascents are possible from both the east and the west with the eastern approach from the road end in Glen Lochay being the most popular with guide book writers. This eastern approach starts at Kenknock which is now the farthest it is possible to drive up Glen Lochay with locked gates stopping cars from going any further, however it is viable to use a mountain bike. It is a six kilometre journey west up the glen to reach Batavaime at the foot of the SE ridge from where the mountain can be climbed. The approach from the west starts at Auch on the A82 and goes under the viaduct of the West Highland Line, then SE up Glen Coralan and over the Corbett of Cam Chreag to reach Creag Mhòr. If continuing to Beinn Heasgarnich from the summit, a direct line NE is not recommended because the hillside is steep and rocky, instead use the north ridge as mentioned before heading east to the col between the two mountains to avoid dangerous ground.
