Best canyons around Maentwrog are characterized by natural gorges and waterways within Snowdonia National Park. The area offers a blend of natural beauty and opportunities for outdoor activities. These features include dramatic river passes, historic bridges, and cascading waterfalls. Maentwrog serves as a base for exploring these unique geological formations.
Last updated: June 30, 2026
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The bridge was probably built in the 17th century and then radically rebuilt and widened in 1795-1796. As with many older bridges, folk tales claimed that the bridge was built by the devil or by the Romans (which an investigation by the National Trust described as "very doubtful"). During the reconstruction, a stone was found with the inscription "W M 1656" scratched on it, suggesting that the bridge is at least that old. Pont Aberglaslyn is located near the downstream end of the Aberglaslyn Pass. Although the location is rocky and the river flows through rapids upstream, it is not far above sea level. (Wikipedia)
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Gorgeous but a little challenging in places. Can be very busy
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Great walk through a variety of tree species and easy to follow path. Would recommend going anti clockwise/reverse of suggested route as scenery coming back through gorge is stunning (with the bridge as a nice suprise at the end) and easier downhill as plenty of small steps. If taking a dog then be aware there is/are sheep grazing along the route but no stiles or fences to climb if you have a large dog but there are very steep banks/drops along the gorge so recommend keeping on a lead if they are a bit hectic! Would not recommend unless you have a basic level of fitness as some parts of the path are extremely steep.
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We followed the river upstream through the Aberglaslyn pass. The narrow path along the river requires some skill. At certain points you have to be very careful, especially in rain or when the water is high. However, you walk through a narrow gorge of considerable beauty, with beautiful views of a sometimes very turbulent river, rapids etc. In short, a very beautiful area.
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A lovely riverside walk, with beautiful views
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The Pass of Aberglaslyn is a magnificent, rocky gorge to the south of Beddgelert. It speeds the Afon Glaslyn on this part of its long journey from high on the slopes of Yr Wyddfa (Snowdon) towards where it meets the sea at Tremadog Bay. The rocky trail here can be slippery when wet, so take care.
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Varied route where you don't just walk along. Magnificent views! And if you're lucky, you'll see otters hunting! You can't see the road that runs parallel to the river - partly because of the noise of the water and partly because of the vegetation on the bank.
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Maentwrog is a base for thrilling canyoning adventures in Snowdonia's gorges. These experiences typically involve a combination of scrambling, swimming, jumping into crystal-clear pools, and abseiling down waterfalls. For those seeking an adrenaline-fueled challenge, the "Ultimate Extreme Canyon" near Maentwrog offers huge leaps from towering rock ledges and fast-flowing streams. These activities are often guided and cater to various skill levels.
Yes, for nature lovers, Ceunant Llennyrch National Nature Reserve is home to a spectacular gorge with numerous waterfalls, including the prominent Rhaeadr Ddu (black waterfall). Another beautiful spot is Cynfal Falls (Rhaeadr Cynfal), where the Afon Cynfal tumbles through a dramatic wooded gorge, offering exciting views and unique rock sculptures like Huw Llwyd's Pulpit.
One popular trail is through The Aberglaslyn Pass and the Glaslyn River Gorge. This narrow path along a turbulent river offers considerable beauty with views of rapids and challenging rock formations. It requires some skill and care, especially in wet conditions. Another option is to explore the paths around Dyffryn Maentwrog Woods, which feature a gorge below Llyn Mair and offer a blend of natural beauty and historical insight.
While many canyoning experiences are adventurous, guided tours often cater to various skill levels, including beginners. For less intense family-friendly outdoor activities, exploring the walking trails in areas like Dyffryn Maentwrog Woods or the easier sections of Ceunant Llennyrch can be suitable. For easy hikes, you can find routes like the Plas Tan y Bwlch lakes loop or the Rhaeadr Du Waterfall loop, which are listed in the Easy hikes around Maentwrog guide.
Near the gorges, you can visit Pont Aberglaslyn, a Grade II-listed, 17th-century stone bridge. It's a famously romantic beauty spot where you can observe the Afon Glaslyn cascading towards the sea. Additionally, Dyffryn Maentwrog Woods features a gorge with a historic millpond that once powered local mills and generated hydroelectricity, offering a glimpse into the region's industrial past.
The best season for canyoning and exploring the gorges around Maentwrog is generally during the warmer months, from late spring to early autumn (summer vs winter). This ensures more pleasant weather for outdoor activities like swimming and abseiling, and typically lower water levels for safer gorge walking. However, the natural beauty of the waterfalls and woodlands can be appreciated year-round, with autumn offering vibrant foliage.
For guided canyoning adventures, all necessary safety equipment, including wetsuits, helmets, and harnesses, is typically provided by tour operators. For gorge walking or hiking, wear appropriate waterproof clothing, sturdy hiking boots with good grip, and be prepared for potentially wet and slippery conditions, especially along river paths like The Aberglaslyn Pass.
While specific designated wild swimming spots are not explicitly detailed, the canyoning experiences near Maentwrog often involve jumping into crystal-clear pools within the gorges. These are typically part of guided tours. For general wild swimming, it's always advisable to check local regulations and safety guidelines, as river conditions can vary.
Beyond canyoning and hiking, the Maentwrog area offers a variety of outdoor activities. You can explore MTB Trails around Maentwrog, with routes like the Llyn Trawsfyndd loop. For cycling, there are options such as the Llyn Padarn Lakeside Trail, detailed in the Cycling around Maentwrog guide. The region's diverse landscape within Snowdonia National Park provides ample opportunities for exploration.
Maentwrog is a popular starting point for guided canyoning tours in Snowdonia. Many local adventure activity providers offer experiences ranging from beginner to advanced. For example, the "Ultimate Extreme Canyon" is highlighted for its challenging features. You can find more information about such experiences and providers by searching for adventure activities in the Snowdonia area, such as those listed on sites like lovetovisit.com.
The gorges around Maentwrog are unique for their blend of natural beauty and adventure opportunities within Snowdonia National Park. They feature dramatic river passes, cascading waterfalls, and ancient oak woodlands, remnants of a vast Celtic rainforest. These natural formations provide a stunning backdrop for activities like canyoning, gorge walking, and exploring historical sites like Pont Aberglaslyn, offering a diverse range of experiences from high-octane adventure to serene natural appreciation.


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