Sawel Mountain – top of the Sperrins

Overview

Sawel is the highest point of both County Londonderry and County Tyrone, and at 678m (2,224ft) the highest of the Sperrins – but there’s no path up it. The one thing to know before you start: from the cattle grid on the Sperrin Road you follow a low stone fence almost the whole way to the summit, and in mist that fence is the difference between a straightforward walk and a bad day out. Underfoot it’s montane heathland – heather, bilberries and cowberries over crystalline limestone – and the summit is the source of the River Faughan, which runs 47 km to join the Foyle.

The walk and navigation

The standard route is an out-and-back of roughly 5 km (GPS tracks log it a little shorter or longer), climbing around 350m. It’s about an hour and a half up and two to two and a half hours in total. Despite the odd guidebook grading it easy, treat it as moderate: there are no waymarks and no boardwalk, just the fence line up the western flank. The first pull is steep and boggy, worse after rain, so waterproof boots and gaiters are not optional. Break through the heather near the top and you reach a modest trig point (TP7350) and a 360-degree view – on a clear day across to Dart Mountain in the southwest and Meenard in the northeast, with the Foyle Valley and the distant Mournes beyond. Sawel is a Marilyn and a Hewitt, and the highest peak outside the Mourne range.

The 1944 crash

Sawel carries a quiet wartime story. On 5 January 1944 a Royal Navy Stinson Reliant (registration FK914) from 878 Naval Air Squadron, flying from RNAS Eglinton to RNAS Machrihanish, crashed into the mountain in thick fog and heavy snow. All three crew were killed. Snowdrifts kept search parties off the wreckage for nearly a month, and the bodies were not recovered until 29 January. A small plaque near the summit is said to mark the site – a plain reminder of how fast the weather turns up here, which is worth carrying with you every step.

Geology and wildlife

The Sperrins are among the oldest rock on the island, and Sawel’s rounded, dome-like profile was shaped by the glaciers of the last Ice Age gouging out the valleys around it. The lower slopes give way to blanket bog and wet heath – a mosaic of peat, moss and hardy upland plants that gives the mountain its bare, solitary feel, a long way from the queues on Ireland’s more famous peaks. Birds you might see over the open ground include red grouse, buzzards and the occasional peregrine falcon.

Practical information

Getting there

The start is the layby just before the cattle grid at the highest point of the Sperrin Road, roughly 2 miles northeast of the B47 junction. It’s not a car park – space for about three cars, no more – so arrive early on a fine weekend. A rough start point is 54.8189, -7.0386. The road is open year-round, though the final approach gets slippery in winter.

Safety and weather

The Sperrins turn quickly. Atlantic fronts can throw fog, heavy rain or strong wind at you even on a mild morning, so check a mountain forecast and carry a windproof layer, waterproofs, and a map or offline GPS track. After prolonged rain the ground is genuinely boggy; gaiters keep your boots out of the peat. In winter, snow and ice glaze the fence and the summit ridge, and microspikes are worth having if frost is forecast. Reception is patchy across the range – tell someone your route and expected return.

Nearby

Sawel is a good base for the wider Sperrins. The Beaghmore Stone Circles, a short drive off, are a fine set of Neolithic and Bronze Age alignments, and Benbradagh gives a more demanding circuit with views over Lough Neagh. Omagh and the walled city of Derry are both within about half an hour for supplies, food or a bed.

Download an offline map before you set out, keep the stone fence in sight, and you’ve a straightforward ascent to one of Northern Ireland’s most solitary summits.