Best natural monuments around Fermanagh include diverse landscapes from subterranean caves to expansive lakes and mountains. This county in Northern Ireland features unique geological formations, rich biodiversity, and varied natural scenery. The region is characterized by its limestone karst, ancient woodlands, and extensive loughs. Visitors can explore a range of natural sites, including mountains, forests, and historical monuments.
Last updated: April 21, 2026
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Kingfisher Trail โ Explore Ireland's diverse history and nature by bike
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Hiking around Fermanagh
Road Cycling Routes around Fermanagh
MTB Trails around Fermanagh
Cycling around Fermanagh
Running Trails around Fermanagh
Gravel biking around Fermanagh
Along the Beech Trail, you'll discover some of the oldest trees on the estate, including Oak and the sprawling limbs of this Horse Chestnut, forming a natural arch over the path.
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The Cuilcagh Boardwalk Trail, affectionately known as the "Stairway to Heaven," offers a challenging yet rewarding hike through one of Northern Ireland's most stunning landscapes. Spanning approximately 11 km round-trip, the trail meanders through expansive blanket bogs before culminating in a steep ascent of 450 wooden steps to a viewing platform atop Cuilcagh Mountain. Hikers are treated to breathtaking panoramic views of the surrounding lowlands, including glimpses of counties Cavan, Leitrim, and Donegal on clear days. While the boardwalk was constructed to protect the delicate bog ecosystem, it has also made the trail more accessible, attracting over 60,000 visitors annually.
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The Cuilcagh Boardwalk Trail, affectionately known as the "Stairway to Heaven," offers a challenging yet rewarding hike through one of Northern Ireland's most stunning landscapes. Spanning approximately 11 km round-trip, the trail meanders through expansive blanket bogs before culminating in a steep ascent of 450 wooden steps to a viewing platform atop Cuilcagh Mountain.
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"continual slur on Irish caving" It's actually only a few hundred metres is accessible and it's total length is thought to be 2km. No where near the longest cave in Ireland. Consider a trip in only if well equipped with a good light and helmet. Alternatively/also consider visiting McKenzies back lounge just down the road. A much drier watering hole. ;)
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Pollnagollum Cave (meaning Hole of the Dove) is the longest cave system in Ireland. The cave system is complex and fascinating and is fed by a tumbling waterfall that topples off a limestone cliff. Watch your stepping here as rocks can be unstable and slippery, and don't forget your camera for some awesome shots.
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Beautiful cascading waterfalls along Cuilcagh Way, situated at the foothills of Cuilcagh Mountain. These multi-tiered waterfalls are a delightful sight as you wind through a forest of lichen, ferns, and wild seasonal bluebells.
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Clodagh Glen has a steep sided gorge that is lined by ancient ash trees that cling to the steep sides. The water sculpted river valley has a spectacular arch over the river which formed when the cave roof collapsed. The reserve is known for its limestone gorge, mystical caves and beautiful waterfalls. In the springtime the valley floor is carpeted by bluebells, wood anemones and wild garlic and in the summer silver-washed fritillaries are found besides the path. With a keen eye you may also spot an elusive pint martin and red squirrels!
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Fermanagh is rich in diverse natural features. You can explore subterranean wonders like the Marble Arch Caves, which offer a fascinating journey through limestone caves with active subterranean rivers and waterfalls. The region also boasts expansive blanket bogs, such as those found on Cuilcagh Mountain, and picturesque loughs like Lough Erne, known for its numerous islands and diverse wildlife.
Yes, Fermanagh offers several natural monuments suitable for families. The Ancient Chestnut Tree provides a gentle walk along the Beech Trail, perfect for younger explorers. The Drumskinny Stone Circle, Cairn and Alignment offers an interesting historical and natural site that can be enjoyed by all ages. Additionally, the Roogagh Waterfall is another accessible natural spot for a family outing.
For an exhilarating hike, the Cuilcagh Boardwalk Trail (Stairway to Heaven) is highly recommended, leading you across an impressive moorland to the summit plateau. The trail to Cuilcagh Mountain Summit offers challenging ascents and fantastic panoramic views. For more options, you can find various running and hiking trails in the area on the Running Trails around Fermanagh guide.
Absolutely. Fermanagh seamlessly blends natural beauty with rich history. You can visit the Janus Stones of Caldragh Cemetery on Boa Island, which are ancient pre-Christian stone figures set within a historic graveyard. Devenish Island, located within Lower Lough Erne, is another excellent example, featuring significant monastic ruins amidst a beautiful natural setting, accessible by boat.
Fermanagh's diverse habitats support a variety of wildlife. Around Lough Erne, you might spot various bird species like herons, kingfishers, and even the rare white-tailed eagle, along with rich fish populations. Lough Navar Forest is home to red squirrels and various bird species. The blanket bogs of Cuilcagh Mountain Park also support unique plants and birds, including the rare Golden Plover.
Yes, Fermanagh features several beautiful waterfalls. You can explore the Cladagh Glen Waterfall, nestled within a forest and gorge. The Cascades Waterfall along Cuilcagh Way offers multi-tiered falls, especially beautiful when wild bluebells are in bloom. Another scenic option is the Roogagh Waterfall.
The best time to visit Fermanagh's natural monuments generally depends on your preferred activities. Spring and autumn offer pleasant temperatures for hiking and exploring, with spring bringing wildflowers and autumn showcasing vibrant foliage. Summer is ideal for water activities on Lough Erne. Some sites, like the Marble Arch Caves, are open year-round, but it's always good to check specific opening times.
Yes, Fermanagh offers excellent cycling opportunities. The Kingfisher Cycle Trail, with both northern loops, provides routes of varying difficulty. You can find more detailed routes and information on the Cycling around Fermanagh guide and the Road Cycling Routes around Fermanagh guide.
Fermanagh is renowned for its caves. The Marble Arch Caves are a major attraction, offering guided tours through a spectacular underground world. You can also discover the Pollnagollum Cave and Waterfall, another natural monument featuring impressive cave formations and a waterfall.
Many of Fermanagh's natural monuments offer breathtaking views. From the Cuilcagh Mountain Summit and the Cliff Edge of Cuilcagh Mountain, you can enjoy extensive panoramic vistas. Lough Navar Forest also provides stunning views over Lower Lough Erne, Donegal Bay, and the Bluestack and Sperrin Mountains from its Magho Cliffs viewpoint.
While some natural monuments in Fermanagh might be accessible via local bus services, many are best reached by car. For specific public transport options to sites like the Marble Arch Caves or Cuilcagh Mountain Park, it's advisable to check local transport schedules and plan your journey in advance, as direct routes can be limited.
When visiting the Marble Arch Caves, it's highly recommended to book tickets in advance, especially during peak season, as tours can fill up quickly. The tours often include a boat ride, so be prepared for cooler temperatures underground. You can check for booking and current opening hours on their official website: visitacity.com.


Find even more amazing natural monuments around Fermanagh 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 around Fermanagh: