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Uisgneabhal Mor (Uisgnaval Mor)
Photo: Colin Park / CC BY-SA 2.0 via Geograph
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Graham · Outer Hebrides

Uisgneabhal Mor (Uisgnaval Mor)

A craggy gneiss Graham at the south end of the Harris hills, looking across Loch Langavat to Clisham. The hill's name means hill of the water valley — apt for a peak surrounded by lochans and burns.

Gaelic: “big” · Pronunciation: uisgneabhal more (uisgnaval mor)

Quick facts

Height
730.1m/ 2395ft
Prominence
483 m
Distance
13 km
Ascent
599 m
Time
46 hrs
Difficulty
4 / 5Serious
Grid ref
NB120085
Parking
NB133089
Nearest
Ullapool
Dogs
Dogs on lead required near livestockDog-friendly guide ↗

Height and prominence cross-checked against the Database of British and Irish Hills (CC BY).

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Standard route

island track 20% · rough gneiss 40% · rocky ridge 30% · summit area 10%

13km · 599m ascent · 3.6 hrs

Park near Bunavoneader on the A859. Follow the old whaling station track east into Glen Ulladale, then climb the south-west spur directly. The upper ridge winds round small lochans onto the summit cairn.

Terrain

Stripped Lewisian gneiss slabs, peat hags and tussocky grass — classic Hebridean walking surface. The summit area is intricate and there are several knolls before the true top.

In winter

Snow rarely sticks at Hebridean altitudes but ice on the gneiss slabs is treacherous. The hills here catch the full force of North Atlantic gales — wind, not snow, is the season's main hazard.

Best time of year

Best OK Avoid

Getting there

  • Glasgow5h 27m
  • Edinburgh6h 5m
Parking: NB133089

Ferry access

Uig (Skye) → Tarbert (Harris)

  • Crossing time105 min
  • Summer sailings2 sailings daily (Apr–Oct)
  • Winter sailings1 sailing daily (Nov–Mar)
  • Book ahead14 days
  • Last ferry backCheck CalMac timetable — last sailing to Uig varies seasonally

Drive to Uig on Skye (Skye Bridge from Kyle of Lochalsh), then ferry to Harris. Alternative: Ullapool → Stornoway (Lewis, 2h45) and drive south.

Book on CalMac

OS maps: OS Landranger 13, OS Landranger 14

Mobile signal: Reception on the A859; gone immediately on the hill

Current conditions

Daylight Today

19h 31mwalking daylight
Sunrise
04:51
Sunset
22:16
Civil dawn
03:48
Civil dusk
23:19

NOAA Solar Calculator · 17 July 2026

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Uisgneabhal Mor (Uisgnaval Mor) — common questions

What difficulty is Uisgneabhal Mor (Uisgnaval Mor)?
On the OutdoorSCOT scale, Uisgneabhal Mor (Uisgnaval Mor) comes in at 4/5 — challenging. Expect roughly 13km and 599m of ascent on the usual route — 4-6 hours for most parties. Underfoot: Stripped Lewisian gneiss slabs, peat hags and tussocky grass — classic Hebridean walking surface.
What is Uisgneabhal Mor (Uisgnaval Mor)'s prominence?
483m of prominence. That's the vertical drop from the summit to the col that links Uisgneabhal Mor (Uisgnaval Mor) to the next higher ground.
Where do I park for Uisgneabhal Mor (Uisgnaval Mor)?
Most walkers start from NB133089 near Ullapool. Verify the grid reference on an OS map before you set off — space is tight on busy summer weekends.
When is the best time to climb Uisgneabhal Mor (Uisgnaval Mor)?
May, June, July, August, September give the most reliable conditions on Uisgneabhal Mor (Uisgnaval Mor). Beyond that window the high ground turns wintry: carry full mountain kit, be confident navigating, and check the SAIS avalanche forecast for the area.
Is Uisgneabhal Mor (Uisgnaval Mor) dog-friendly?
Yes, but dogs must be kept on a lead — there is livestock or ground-nesting bird interest on the route.
Is there mobile signal on Uisgneabhal Mor (Uisgnaval Mor)?
Reception on the A859; gone immediately on the hill
How do I get the ferry to Uisgneabhal Mor (Uisgnaval Mor)?
Uig (Skye) → Tarbert (Harris). 2 sailings daily (Apr–Oct) in summer; 1 sailing daily (Nov–Mar) in winter. Book at least 14 days ahead. Drive to Uig on Skye (Skye Bridge from Kyle of Lochalsh), then ferry to Harris. Alternative: Ullapool → Stornoway (Lewis, 2h45) and drive south.
Is Uisgneabhal Mor (Uisgnaval Mor) safe in winter?
Snow rarely sticks at Hebridean altitudes but ice on the gneiss slabs is treacherous. The hills here catch the full force of North Atlantic gales — wind, not snow, is the season's main hazard.

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