TrailTrack
Knocknasliggaun [Knockasliggaun]
Republic of Ireland

Knocknasliggaun [Knockasliggaun]

417M
1368FT

About Knocknasliggaun [Knockasliggaun]

Rising above the boggy lowlands of County Mayo, this isolated Marilyn offers a rugged, pathless ascent typical of the Ox Mountains. At 417m, its summit provides an uncrowded vantage point over the shimmering waters of Lough Conn to the south and the massive quartzite bulk of Nephin to the west.

Key Statistics

Rank
125th Highest in Region
Parent Range
Data coming soon
Prominence
?
242m
Nearest Town
Kilmacteige
Geology
Silurian Slates & Gritstone
Classifications

Find It

OS Grid Reference
G371156
Latitude
54.0857°N
Longitude
8.9619°W

Did You Know?

  • The name derives from the Irish Cnoc na Sligán, which translates to 'hill of the shells' or 'hill of the flat stones,' likely describing the shattered, slaty metamorphic rock found across its slopes.
  • It sits on the southern fringe of the Ox Mountains, an ancient range of gneiss and schist that is significantly older than the limestone plains surrounding it.
  • The summit offers an excellent perspective on the Nephin Beg Range, providing a clear view of the 'Great Wilderness'—one of the most remote and uninhabited areas in Ireland.
  • Navigating the lower slopes often involves a tactical game of 'find the firmest tuft' to avoid disappearing into the notorious West of Ireland blanket bog.

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3D Flyover

Experience a virtual tour of Knocknasliggaun [Knockasliggaun] with our interactive 3D terrain map.