Sgùrr Dearg
Sgùrr Dearg is a mountain on the Isle of Skye in the Scottish Highlands, rising to 978 metres above sea level on the Cuillin ridge. It is one of the most celebrated peaks in the British Isles, not merely for its own considerable height and dramatic character, but because it is the parent summit of what is widely regarded as the most extraordinary rock pinnacle in the United Kingdom: the Inaccessible Pinnacle, or An Stac as it is sometimes called locally. The Inaccessible Pinnacle is the true highest point of Sgùrr Dearg, a blade of gabbro rock projecting from the summit ridge that stands roughly twenty metres above the main top, and it is the only Munro in Scotland whose summit cannot be reached without technical rock climbing. This single fact has made Sgùrr Dearg a place of pilgrimage for serious mountaineers and hillwalkers for over a century, since completing all 282 Munros requires that climbers ascend this improbable fin of stone.
The geological story of Sgùrr Dearg and the broader Cuillin is one of volcanic drama on an immense scale. The mountains are composed principally of gabbro and basalt, remnants of an ancient magma chamber that intruded into older rock during the Palaeogene period, roughly 60 million years ago. The gabbro in particular is extraordinarily rough, so abrasive that it grips climbing boots with unusual tenacity but also wears through rubber soles with striking speed. The Cuillins are geologically distinct from the rest of Scottish mountain scenery, which tends to be formed from smoother granite and metamorphic rock. This roughness and sharpness, combined with the near-absence of soil and vegetation on the upper ridges, gives the range a rawness and severity that sets it apart from any other landscape in the British Isles.
In physical character, Sgùrr Dearg is imposing and angular. Approaching it from Glen Brittle to the west, the walker passes through heather moorland before the terrain steepens sharply and the path becomes loose scree and boulder-strewn slopes. The upper mountain is a world of bare rock, with the view opening progressively onto other Cuillin peaks, the sea lochs, and on clear days the outer isles. The Inaccessible Pinnacle itself is a startling object when you first encounter it close up. From a distance it appears as a sharply upthrust tooth; at its base, the scale becomes more apparent. Its longer, eastern ridge is the standard climbing route and is graded Moderate in rock climbing terms, though the airy exposure and the need for a rope abseil to descend the short western face make it a genuine mountaineering undertaking rather than a scramble. The sounds of the summit on a calm day are wind, the occasional chough crying overhead, and the distant whisper of the sea.
The surrounding landscape is the full grandeur of the Black Cuillin, one of the most dramatic mountain environments in Europe. The main ridge of the Cuillin forms a horseshoe around Loch Coruisk, a remote and brooding freshwater loch hemmed in by precipitous rock walls. Sgùrr Dearg sits on the western arm of this horseshoe, with neighbours including Sgùrr na Banachdaich to the north and Sgùrr Mhic Choinnich to the south. Glen Brittle, the starting point for most approaches, lies to the west and opens onto the Sound of Soay and the broader Atlantic. On the clearest days the panorama from the summit ridge encompasses the Outer Hebrides, the Ardnamurchan peninsula, and the hills of Torridon far to the north.
The Inaccessible Pinnacle was first climbed in 1880 by Charles and Lawrence Pilkington, two brothers who were pioneering figures in British mountaineering. Their ascent was part of a broader explosion of interest in the Cuillin during the late Victorian era, when the Black Cuillin became a proving ground for a generation of climbers who would go on to attempt the great Alpine and Himalayan peaks. The Skye Mountaineering Club and later the Scottish Mountaineering Club documented the range extensively, and Sgùrr Dearg with its Pinnacle occupied a central place in that literature. The mountain retains a mythic quality in climbing culture: bagging the Inaccessible Pinnacle is a rite of passage, and guiding companies on Skye do a steady business shepherding Munro completionists to its narrow crest.
Practically speaking, the standard approach to Sgùrr Dearg begins at the Glen Brittle Memorial Hut or the nearby campsite, both of which lie at the end of the single-track road running through Glen Brittle from the A863 Dunvegan road. The walk-in gains height steadily on a well-worn path, taking between two and three hours to reach the main summit plateau depending on fitness and conditions. For the Inaccessible Pinnacle itself, a rope, harness, and the ability to place or use a belay are strongly recommended; many independent walkers hire a mountain guide for this section alone. The mountain deserves respect in poor weather, as mist and rain arrive suddenly on Skye, the gabbro becomes slippery when wet despite its usual roughness, and route-finding on the upper ridge is genuinely difficult without experience. The best visiting conditions are generally from late May through September, though settled weather can occur at any time of year and the winter Cuillin offers a serious mountaineering challenge to those equipped and experienced for it.
A detail that surprises many first visitors is the compass anomaly on the Cuillin ridge. The gabbro contains sufficient magnetite that magnetic compasses behave erratically, sometimes pointing in directions up to 30 degrees off true north. This peculiarity, well-known to Cuillin regulars, is a practical hazard in mist and a reminder of the unusual geological character of this place. Navigators on the ridge must rely on careful map work, GPS, or intimate knowledge of the terrain rather than their compasses. It is one of very few ranges in the British Isles where this phenomenon is pronounced enough to constitute a genuine navigational challenge, and it lends a slightly otherworldly quality to the experience of moving through the upper Cuillin that feels entirely appropriate to a landscape this singular.