Sgurr a' Mhaim: the Devil's Ridge Scramble

Sgùrr a' Mhàim, standing tall at 1,099 metres, is a prominent Munro in the western Mamores, famed for its thrilling traverse along the aptly named Devil’s Ridge. This knife-edge arete offers a grade 1 scramble with breathtaking exposure and panoramic views over the surrounding Highland peaks. Whether you’re seeking an adrenaline-charged ridge walk or simply want to soak in the grandeur of the Mamores, this hike is an unforgettable adventure for experienced walkers. However, its challenges demand caution, preparation, and respect for the ever-changing conditions of the Scottish mountains.

The Devil’s Ridge scramble is a highlight of the renowned Ring of Steall ridge route, but it can also be enjoyed as an out-and-back hike from the Glen Nevis road end. This guide provides all the essential details for tackling this exhilarating route, from practical advice on the walk to safety tips and navigation assistance.

Route Overview

The route begins at the Glen Nevis road end car park (grid ref NN170668). From here, walkers ascend the north-west shoulder of Sgùrr a' Mhàim, following a clear and well-trodden path up steep hillside, scree, and heather. Upon reaching the summit plateau (grid ref NN165667), the Devil’s Ridge beckons - a narrow, exposed ridge that connects Sgùrr a' Mhàim to Stob Bàn.

The Devil’s Ridge is the defining feature of this route. Although technically straightforward with only grade 1 scrambling required, it is not for the faint-hearted. The narrow ridge has steep drops on both sides, and careful foot placement is essential. In winter, the ridge often becomes treacherous due to snow cornices and ice, making it a serious undertaking.

After crossing the ridge to Stob Bàn, walkers can retrace their steps or explore additional peaks, such as those included in the full Mamores ridge traverse. The out-and-back route to Sgùrr a' Mhàim and Stob Bàn is approximately 12 kilometres with 1,200 metres of ascent, taking 6 to 8 hours to complete. For those with the stamina and experience, the Ring of Steall route adds further excitement, with a total of four Munros and 15 kilometres of walking.

The Walk

Stage 1: Glen Nevis Road End to Sgùrr a' Mhàim Summit

The hike begins at the Glen Nevis road end car park, where spaces are limited, so an early start is recommended. From here, a well-defined path climbs steadily up the north-west shoulder of Sgùrr a' Mhàim. The ascent is steep in places, with loose scree underfoot requiring careful footing. As you gain height, the views over Glen Nevis and the surrounding peaks, including Ben Nevis across the glen, become increasingly impressive.

After approximately 2-3 hours of climbing, you’ll reach the broad summit plateau of Sgùrr a' Mhàim, marked by a cairn. Take a moment here to catch your breath and enjoy the panoramic views before preparing for the next stage.

Stage 2: The Devil’s Ridge

From the summit of Sgùrr a' Mhàim, descend slightly west to reach the bealach (col) that marks the start of the Devil’s Ridge. The narrow arete demands focus and careful navigation, as the steep drops on either side leave little room for error. While the scrambling sections are not technically difficult, a head for heights and steady nerves are essential.

In good conditions, crossing the ridge is an exhilarating experience. The path twists and turns along the ridgeline, offering incredible views over the surrounding Mamores and beyond. However, in poor weather, the exposure can make the ridge dangerous, and it is best avoided if strong winds, rain, or ice are present.

Stage 3: Stob Bàn and Return

After crossing the Devil’s Ridge, you’ll reach the base of Stob Bàn. The final climb to its summit is steep but relatively short, with the cairn offering yet another rewarding viewpoint. From here, retrace your steps back across the Devil’s Ridge and descend via your ascent route to Glen Nevis. Alternatively, experienced walkers may choose to extend the day by incorporating other Munros within the Mamores.

Getting There and Parking

The Glen Nevis road end car park serves as the starting point for this hike (grid ref NN170668). The car park operates on a pay-and-display basis and has limited spaces, so it’s best to arrive early, especially during the busy summer months. If travelling by public transport, the nearest bus stop is at Achriabhach, served by the NNHP7 route from Fort William. From there, an additional walk along the Glen Nevis road will be required to reach the trailhead.

Key Takeaways

• The Devil’s Ridge scramble is a grade 1 route: easy to moderate scrambling with significant exposure.
• Best tackled in dry, calm conditions from May to October for optimal safety and enjoyment.
• The route covers 12 kilometres with 1,200 metres of ascent, taking 6-8 hours for fit walkers.
• Essential gear includes sturdy boots, windproof layers, a map and compass, and plenty of water.
• This route is not suitable for inexperienced walkers or those uncomfortable with heights.

Frequently Asked Questions

How hard is the Devil’s Ridge?

The Devil’s Ridge is a grade 1 scramble, making it technically easy but exposed. It requires a head for heights and careful navigation along the narrow arete. Prior experience with scrambling or ridge walking is strongly recommended.

Is the Devil’s Ridge dangerous?

While the ridge is straightforward in dry, calm conditions, its exposure and steep drops make it dangerous in poor weather, strong winds, or icy conditions. Always check the weather forecast and ensure you are comfortable with the level of exposure before attempting it.

Can you avoid the Devil’s Ridge?

It is possible to bypass the Devil’s Ridge by contouring below the bealach, but this alternative route loses the main feature of the hike. The bypass is also steep and loose, so it is not necessarily easier or safer.

How long does the Devil’s Ridge take?

Crossing the Devil’s Ridge typically takes 30-45 minutes, depending on conditions and individual pace. Allow additional time to enjoy the views and take care on the more exposed sections.

For those seeking a thrilling challenge in the Scottish Highlands, the Devil’s Ridge scramble on Sgùrr a' Mhàim is an unforgettable experience. With proper preparation and respect for the mountain, this route offers some of the most dramatic and rewarding ridge walking in the Mamores. For other nearby adventures, consider exploring Stob Bàn and Mullach nan Coirean or visiting the Steall Waterfall below.