Marble Arch & Cuilcagh

This dramatic route explores the UNESCO Global Geopark straddling the Fermanagh-Cavan border. Underground rivers, show caves, rare limestone pavement, and the famous "Stairway to Heaven" boardwalk make this a genuine adventure for all ages.

Why This Route?

The Marble Arch Caves Global Geopark is unique:

• Underground wonders - Ireland's longest show cave
• The Stairway to Heaven - Instagram-famous boardwalk
• Rare landscapes - Limestone pavement like the Burren
• Cross-border experience - Seamlessly crosses into Cavan
• Family adventure - Exciting for all ages

Where to Stay

This compact 87km route radiates south from Enniskillen to the caves, the Cuilcagh boardwalk, and the Cavan border at Blacklion before looping back. A single base in Enniskillen keeps every attraction within a short drive and gives you the option of an early start for the Stairway to Heaven before the car park fills.

Enniskillen

Enniskillen is Fermanagh's lakeland capital and sits right at the route's starting point. With a good spread of hotels, B&Bs, and restaurants clustered around its island setting on Lough Erne, it is the obvious place to sleep. Marble Arch Caves are roughly 25 minutes south, Florence Court is even closer, and you can be at the Cuilcagh trailhead in about 35 minutes.

The Geology

This landscape was formed by water dissolving limestone over millions of years:

• Caves - Carved by underground rivers
• Limestone pavement - Exposed rock with deep fissures (grikes)
• Sinking rivers - Streams that disappear underground
• Calcite formations - Stalactites and flowstone in the caves

The Route

Starting from Enniskillen

Head south through Florencecourt, passing the beautiful National Trust estate.

Marble Arch Caves

The centrepiece of the route - a spectacular show cave experience:

• Boat ride - Underground river takes you into the cave system
• Walking tour - Past stunning formations over 300 million years old
• Exhibition - Explaining the geopark's geology and history
• Nature reserve - Woodland walks around the entrance

Tours run hourly and last about 75 minutes. Booking is highly recommended.

Cladagh Glen

A short walk through ancient woodland to the natural Marble Arch - where the underground river emerges into daylight. The arch itself is a dramatic rock formation.

Cuilcagh Boardwalk (Stairway to Heaven)

One of Ireland's most popular hiking destinations. The trailhead car park is on the Marlbank Road, still on the Fermanagh side, and the 7.5km boardwalk trail climbs from there through blanket bog to the summit of Cuilcagh Mountain (665m). The summit ridge itself is the Fermanagh-Cavan county boundary.

Trail Details:

• Distance: 7.5km each way (15km return)
• Time: 4-5 hours return
• Difficulty: Moderate (the boardwalk is stepped)
• Highlights: Endless bog views, summit cairn, escarpment edge

Important: The Stairway has become very popular - arrive early (before 9am) to guarantee parking.

Legnabrocky Trail

A shorter alternative if the main boardwalk is too busy - this loop offers similar bog scenery without the crowds.

Blacklion

A small border village with traditional pubs - good for lunch or refreshments after your hike.

Shannon Pot

Just south in Cavan, this pool is the official source of the River Shannon, Ireland's longest river. An easy short walk from the road.

Adventure Options

Caving

For the more adventurous, several operators offer wild caving experiences in the system beyond the show cave.

Geopark Guided Walks

Rangers lead interpretive walks explaining the unique geology.

Cycling

The quiet roads around the geopark are excellent for cycling.

Practical Tips

1. Book Marble Arch Caves online - Especially in summer
2. Caves are cool (8°C) - Bring a layer even in summer
3. Boardwalk parking fills early - Arrive before 9am weekends
4. Wear hiking boots for Cuilcagh - The ground is rough and wet
5. Check weather for summit - Cloud descends quickly
6. No dogs on boardwalk - They're not permitted

What to Bring

• Waterproof jacket (essential even in summer)
• Hiking boots
• Water and snacks for Cuilcagh
• Warm layer for caves
• Camera!

Family Notes

• Marble Arch Caves - Suitable for all ages (minimum age 3)
• Cuilcagh Boardwalk - Challenging for young children (long distance)
• Legnabrocky Trail - Better family option (shorter, less crowded)
• Shannon Pot - Very short, easy walk

Before You Drive This Route

The Marble Arch & Cuilcagh is 87km and about 2.5 hours of driving, though 1 day is the honest figure once you factor in the stops. Visitors who have never driven on the left should start with driving on the left in Ireland; the Irish roundabout rules guide covers the other thing that catches people out. Most of it is in Northern Ireland, so there are no tolls and distances are signed in miles rather than kilometres — but it crosses the border into Cavan between Belcoo and Blacklion, where the signs go back to kilometres and the prices to euro. Carry a card that works either side. The Irish toll roads guide covers the crossing if you are driving up from the Republic. Travelling with children, our family road trip guide has the stops and timings that keep a day like this civil. Automatic or manual is the decision that catches most visitors out — manual versus automatic has the honest answer for Irish roads. More drives in the same corner of the country are on the County Fermanagh page, and the Fermanagh Lakelands pairs naturally with this one.