Gleann Sgaladail, Mullach an Langa, Mulla bho Dheas and An Cliseam

This is a big, serious hill day in North Harris, linking the broad upper slopes of Mullach an Langa, the higher ridge running over Mulla bho Dheas, and the summit of An Cliseam, the highest mountain in the Outer Hebrides. At around 14 km / 8.7 miles with roughly 1,000 m / 3,280 ft of ascent, it is a difficult route that feels much bigger than the numbers suggest because the terrain is often pathless, wet, rough underfoot, and very exposed to Atlantic weather. The usual start is near the bridge over the Abhainn Scaladail by the A859 at Scaladale/Ardvourlie, close to the Scaladale Centre, Isle of Harris, HS3 3AG, with the route also commonly associated with the nearby Harris Walkway access point. Sources describing this circuit place the start around the Abhainn Scaladail bridge and Gleann Sgaladail approach, with parking split between the bridge area and roadside space near the Harris Walkway. (walkhighlands.co.uk)

The opening section is usually the quietest and most deceptive. From the roadside, the route heads into Gleann Sgaladail, following a track or intermittent path up the glen before the line becomes less distinct. The first few kilometres are not technically difficult, but they can be slow going if the ground is saturated. Expect peat, bog, stream crossings, and sections where the path fades into open hillside. This lower approach is important for pacing: although the skyline ahead looks rounded, the climb steepens significantly once you leave the glen floor and begin working up toward the ridge of Mullach an Langa. Walkhighlands notes that the path eventually peters out and that walkers continue upstream past Loch Mhisteam toward the foot of the ridge. (walkhighlands.co.uk)

The climb to Mullach an Langa

After roughly 4 to 5 km / 2.5 to 3.1 miles, the route begins to feel more mountainous. The ascent onto Mullach an Langa is where much of the early height gain is earned, and in poor visibility this is one of the key places where careful navigation matters. The hillside is broad rather than sharply defined, so it is easy to drift off line in mist. If you are carrying digital mapping, use HiiKER to keep a close eye on your position, especially where the glen approach gives way to open slopes.

Once on the ridge, the character of the day changes. The ground becomes rockier and more open, and the views begin to widen dramatically across North Harris, the interior lochs, and, on a clear day, long reaches of Lewis and the surrounding sea. Mullach an Langa itself is not the highest point of the day, but it is a major landmark in the horseshoe and a natural turning point from glen walking to ridge travel. The ridge onward is undulating rather than knife-edged, but it is still committing because escape options are limited and the weather can move in fast. The Clisham horseshoe descriptions from local walking sources consistently highlight this long ridge as one of the classic mountain outings in the Outer Hebrides. (visitouterhebrides.co.uk)

Ridge travel over Mulla bho Dheas to An Cliseam

From Mullach an Langa, the route continues over high, rolling ground toward Mulla bho Dheas, with cumulative ascent adding up as the ridge rises and falls. Even though the individual gradients are often moderate, the terrain can be tiring: expect stony patches, springy peat, wet hollows, and occasional loose ground. In windy conditions this section can feel very exposed, with little shelter anywhere along the crest.

Mulla bho Dheas is one of the principal tops on the Clisham horseshoe and sits at about 743 m / 2,438 ft. From here, the final pull to An Cliseam is usually obvious in clear weather, with the broad summit mass dominating the skyline. An Cliseam reaches about 799 m / 2,621 ft and is the highest point in the Outer Hebrides. The summit is expansive rather than dramatic underfoot, but the sense of space is exceptional. On a clear day, the summit panorama can include much of Harris and Lewis, with the surrounding ridges of the horseshoe laid out in full. (stevenfallon.co.uk)

Because the summit area is broad, descent bearings matter. In cloud, this is not a place to rely on instinct