Best natural monuments in Sligo showcase a landscape shaped by glacial activity and rich in ancient history. County Sligo, situated on Ireland's Wild Atlantic Way, features distinctive geological formations and significant archaeological sites. The region offers a variety of natural features, from flat-topped mountains to scenic lakes and waterfalls. These monuments provide opportunities to explore unique flora, historical cairns, and diverse ecosystems.
Last updated: April 28, 2026
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Popular around Sligo
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At the Carrowmore Megalithic Cemetery, archaeologists have discovered the remains of more than 60 tombs, of which more than 30 have been excavated. The oldest tombs are about 700 years older than Newgrange and date from around 3800 BC.
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See also: www.carrowkeel.com
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A beautiful, very distinctive table mountain that dominates the landscape over a wide area.
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A beautiful, distinctively shaped table mountain that has dominated the landscape since.
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The graves at Carrowmore are numbered - a list is available at the entrance. This is Grave 51 - a former barrow that was opened at the back in 1998 and the interior was uncovered. It is now possible to go into the grave.
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Carrowmore (Irish: An Cheathrú Mhór, 'the great quarter') is a large group of megalithic monuments. They were built in the 4th millennium BC, during the Neolithic (New Stone Age). There are about thirty surviving tombs from about 80. There may have been more monuments originally, but some fell victim to quarrying and field clearance during the 18th, 19th and early 20th centuries. The tombs are numbered - a list is provided at the entrance. https://en.wikipedia.org/wiki/Carrowmore
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The Gleniff Horseshoe has spectacular views of the Dartry Mountains and Donegal Bay. The valley was formed during the last Ice Age when the entire valley was carpeted in one kilometre thick ice. When the ice melted and retreated, it hollowed out this picturesque valley.
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The spruces are extremely densely planted. Nothing will come of it. Much nicer are the deciduous tree areas...
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Visitors frequently enjoy the historical significance and panoramic views from Queen Maeve's Grave (Knocknarea Cairn). Another highly rated spot is Benbulben, known for its distinctive shape and beautiful vistas. The Summit of Benbulben also offers great views and is suitable for various fitness levels.
Yes, Carrowmore Megalithic Tombs is listed as family-friendly, offering an engaging historical experience. Additionally, Glencar Waterfall, while not in the highlights data, is known from region research to have amenities like a playground and easy walks to viewing platforms, making it suitable for families.
Sligo's landscape is rich in unique geological formations. Benbulben, often called 'Ireland's Table Mountain,' is a prime example, carved by glaciers during the last Ice Age, featuring steep-sided formations of limestone atop mudstones. You can even find fossils of seashells and corals within its rock layers. The Caves of Keash also offer a fascinating glimpse into the region's geological past.
Sligo is deeply intertwined with ancient history. The most prominent is Queen Maeve's Grave (Knocknarea Cairn), a massive Neolithic burial mound on Knocknarea, believed to be older than Egypt's pyramids. The Carrowmore Megalithic Tombs are another significant historical site, and the Carrowkeel Neolithic Cemetery offers further insights into prehistoric life.
Absolutely. Sligo offers excellent hiking trails. For instance, you can find routes like the 'Knocknarea and Queen Maeve's Grave loop from Strandhill' or the 'Benbulben Loop' for various difficulty levels. You can explore more options in the Hiking in Sligo guide.
Beyond hiking, Sligo provides diverse outdoor activities. You can find running trails such as the 'Benbulben Forest loop' or 'Mullaghmore Head Loop'. For mountain biking enthusiasts, there are routes like the 'Bunnyconnellan Loop'. Discover more details in the Running Trails in Sligo and MTB Trails in Sligo guides.
Many natural monuments offer spectacular views. The summit of Knocknarea, home to Queen Maeve's Grave, provides stunning 360-degree panoramas. The Summit of Benbulben and Benbulben itself are renowned for their scenic outlooks. Additionally, Mullaghmore Head offers dramatic coastal views.
The best time to visit Sligo's natural monuments generally depends on your preferred activities. Spring and summer (April to September) offer milder weather, longer daylight hours, and vibrant greenery, ideal for hiking and exploring. Waterfalls like Glencar Waterfall are particularly dramatic after heavy rain, which is more common in autumn and winter, though these seasons can also bring strong winds, especially at exposed sites like Benbulbin.
Yes, Sligo is rich in such connections. Benbulben is deeply intertwined with Irish mythology, said to be a hunting ground of the Fianna warriors and the resting place of Diarmuid and Gráinne. Glencar Waterfall famously inspired William Butler Yeats's poem 'The Stolen Child,' adding a layer of literary magic. Lough Gill also features the iconic Lake Isle of Innisfree, immortalized in Yeats's poetry.
Lough Gill is a scenic freshwater lake surrounded by wooded hills. It's a protected site known for its unique ecosystem, including species like lamprey, Atlantic Salmon, and otters. The lake contains numerous islands, most famously the Lake Isle of Innisfree. The surrounding woodlands, such as Hazelwood Forest and Slish Wood, offer nature trails, and the lake itself can be explored by boat, making it a haven for nature lovers and birdwatchers.
While popular sites draw crowds, exploring areas like the Caves of Keash can offer a more secluded experience, with its fascinating history and natural formations. The Gleniff Horseshoe also provides a stunning, often quieter, scenic drive and walking opportunities through a dramatic glacial valley.
Given Sligo's often changeable weather, it's advisable to wear layers. Waterproof and windproof outer layers are recommended, especially for exposed areas like mountain summits or coastal viewpoints. Sturdy, waterproof hiking boots are essential, as many trails can be stony, wet, or boggy, particularly after rain. Even on an easy tour, damp feet can be an issue in raised bogs.


Find even more amazing natural monuments in Sligo by checking out the top Highlights region by region:
Extend your search for the best caves by checking out these guides of the top ones in Sligo: