Llwyn-on Reservoir
A scenic reservoir in the Brecon Beacons, famous for its exposed ancient bridge and beautiful walking trails.
Highlights
Must-see attractions
Social
From TikTok & Reddit
Best Time
See the submerged bridge
Llwyn-on Reservoir
Best Time
See the submerged bridge
Highlights
Must-see attractions
A scenic reservoir in the Brecon Beacons, famous for its exposed ancient bridge and beautiful walking trails.
"A stunning walk with unique views, especially when the old bridge emerges from the water!"
🎯 See the Exposed Bridge
Visit after dry spells to see the Pont ar Daf bridge emerge from the water!
👟 Comfortable Walking Shoes
The 5km loop has uneven ground and inclines. Sturdy shoes are a must! :athletic_shoe:
Quick Facts
Rating
4.7 · 261 reviews
Type
Natural Feature
Highlights
Discover the most iconic attractions and experiences
Pont ar Daf Bridge
Llwyn-on Reservoir
Witness the ancient bridge emerge from the water after dry spells, a truly unique and photogenic spectacle.
Scenic Reservoir Loop
Llwyn-on Reservoir
Enjoy a 5km walk with stunning water views, passing through woodlands and open areas.
Garwnant Visitor Centre
Near Llwyn-on Reservoir
A perfect stop for refreshments, toilets, and information, with outdoor play areas and sculptures.
Plans like a pro.
Thinks like you
Planning Your Visit
Best Time for Unsubmerged Views
Prepare for Varied Terrain
Best Times
Insider Tips
from TikTok, Instagram & Reddit
🎯 See the Exposed Bridge
Visit after dry spells to see the Pont ar Daf bridge emerge from the water! 
👟 Comfortable Walking Shoes
The 5km loop has uneven ground and inclines. Sturdy shoes are a must! :athletic_shoe:
🐶 Dog Walking Challenges
Great for dogs, but beware of stiles on road sections that can be tricky for large dogs.
🧺 Picnic Paradise
Plenty of benches and open spaces for a lovely picnic with beautiful water views. :sandwich:
Tips
from all over the internet
🎯 See the Exposed Bridge
Visit after dry spells to see the Pont ar Daf bridge emerge from the water!
👟 Comfortable Walking Shoes
The 5km loop has uneven ground and inclines. Sturdy shoes are a must! :athletic_shoe:
🐶 Dog Walking Challenges
Great for dogs, but beware of stiles on road sections that can be tricky for large dogs.
🧺 Picnic Paradise
Plenty of benches and open spaces for a lovely picnic with beautiful water views. :sandwich:
🚗 Parking Availability
Free parking is available at Garwnant Visitor Centre or lay-bys, though ground can be uneven. 🚗
What Travellers Say
Reviews Summary
Visitors rave about the stunning natural beauty and the unique experience of seeing the Pont ar Daf bridge emerge from the water. The 5km walk is a highlight, offering lovely views and ample picnic spots. While generally praised, some note the uneven terrain and potential challenges for large dogs on certain sections of the walk.
""A good stopover in a motorhome. It’s a bit noisy during the day and busy with families stopping for food and drinks. There are plenty of benches and beautiful views of the water reservoir. Swimming and canoeing are not allowed. Lots of parking spaces, though the ground is a bit uneven with some potholes.""
Jana Kanova
"Great for picnic and forest walks. Stunning here."
Hug Dealer
"Free parking. Lots of picnic spots with tables/ benches. Open areas & wooded areas for shade on hot sunny days. Can walk complete circuit around reservoir, parts on quiet back road. Not far to the mountain centre which has cafe & toilets. Lots of walking in the area & close to Pen Y Fan."
Kerry Jones
What People Like
What People Dislike
Frequently Asked Questions
🚇 🗺️ Getting There
Llwyn-on Reservoir is located in the Brecon Beacons National Park, accessible by car. It's about 40 minutes from Cardiff. Parking is available at the Garwnant Visitor Centre or in lay-bys along the main road.
Yes, it's well-signposted, especially if you're heading towards the Brecon Beacons. The Garwnant Visitor Centre is a good landmark to aim for.
Public transport options are limited for direct access. It's best to travel by car or consider a taxi service from nearby towns like Merthyr Tydfil.
The drive through the Brecon Beacons National Park itself is scenic. Approaching from the south via the A470 offers beautiful mountain vistas.
Generally, access is good, but it's always wise to check local traffic updates before your journey, especially during peak seasons or adverse weather.
🎫 🎫 Tickets & Entry
No, entry to Llwyn-on Reservoir and the surrounding walking paths is free. Parking at the Garwnant Visitor Centre is also free.
The reservoir and its walking trails are accessible at all times. The Garwnant Visitor Centre has specific opening hours, typically during daylight.
No booking is required as it's a natural attraction with free access.
While the area is open, it's advisable to visit during daylight hours for safety and to fully enjoy the scenery.
Yes, Llwyn-on Reservoir is beautiful year-round, offering different experiences in spring, summer, autumn, and winter.
🎫 🧭 Onsite Experience
You can enjoy a 5km walk around the reservoir, admire the views, and visit the Pont ar Daf bridge when it's exposed. There are also woodland trails and sculptures.
The main 5km loop is generally flat with some small inclines and uneven ground, making it suitable for most. Off-track paths can be more challenging.
No, swimming and canoeing are not permitted in Llwyn-on Reservoir. It's a water supply reservoir.
The Pont ar Daf bridge when exposed, the reflections on the water, and the surrounding woodland offer fantastic photo opportunities. Drone shots are also popular.
Yes, the Garwnant Visitor Centre provides toilets and there are numerous benches and picnic spots around the reservoir.
🍽️ 🍽️ Food & Dining
The Garwnant Visitor Centre has a cafe offering food and ice cream. Many visitors also bring picnics to enjoy at the designated spots.
Absolutely! Llwyn-on Reservoir is a popular spot for picnics, with many benches and open areas available.
The cafe typically offers sandwiches, snacks, hot drinks, and ice cream, perfect for refueling after a walk.
The Garwnant Visitor Centre is the closest option. For more extensive dining choices, you would need to travel to nearby towns like Merthyr Tydfil.
Barbecues are generally not permitted in national park areas to prevent wildfires. It's best to stick to picnics.
📸 📸 Photography
Early mornings and late afternoons offer beautiful soft light. After dry spells, the exposed Pont ar Daf bridge is a must-capture subject.
Drone usage is common here for capturing aerial views, but always check current regulations for the Brecon Beacons National Park to ensure compliance.
A wide-angle lens is great for landscapes, while a telephoto lens can be useful for wildlife. A polarizing filter can enhance water reflections.
The area around the Pont ar Daf bridge and various points along the 5km loop offer excellent vantage points for capturing the reservoir and surrounding scenery.
Spring offers lush greenery, autumn provides vibrant foliage, and winter can offer dramatic, moody landscapes. The exposed bridge is a unique seasonal event.
Social
from TikTok, Instagram & Reddit