Mynydd Mawr
Mynydd Mawr: The Dragon's Back of Snowdonia
Mynydd Mawr, often nicknamed the “Dragon’s Back” due to its distinctive ridged silhouette, is a lesser-known gem in Snowdonia. Standing at 698 metres, it’s not the tallest peak in the region, but what it lacks in height, it more than makes up for in character. With its steep slopes, panoramic views, and quieter trails, Mynydd Mawr is perfect for hikers seeking a rewarding challenge without the usual crowds.
A Hidden Gem with Big Mountain Views
Mynydd Mawr’s rugged terrain and dramatic profile make it one of Snowdonia’s most striking smaller peaks. Located on the western edge of the national park, it overlooks Llyn Cwellyn and offers some of the best views towards the Nantlle Ridge and Yr Wyddfa (Snowdon). The ascent is typically a mix of grassy slopes and rocky outcrops, with sections of narrow ridges that add a bit of excitement.
The summit offers sweeping views over the Llyn Peninsula, the Irish Sea, and the surrounding mountains. It’s an underrated spot that delivers an authentic mountain experience, perfect for those who want to escape the busier trails around Snowdon.
Walks & Hikes Around Mynydd Mawr
While Mynydd Mawr might not be the highest peak, its steep climbs and exposed ridges make it a great adventure. Here are some of the best routes to the top:
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Mynydd Mawr via Y Fron
- 4 mi
- 3 hrs - 4 hrs
A direct, steep route with ridge views and a rocky final push from Y Fron.
Mynydd Mawr via Rhyd Ddu
- 6 mi
- 4 hrs 5 hrs
A scenic climb through farmland and grassy slopes with views of Llyn Cwellyn and the Nantlle Ridge.
Circular Route from Cwellyn Arms
- 5 mi
- 3 hrs - 4 hrs
A gentler loop with woodland paths and a gradual climb, quiet and scenic.
Mynydd Mawr via Bwlch y Groes
- 2 mi
- 5 hrs - 6 hrs
A longer, more remote hike with rugged terrain and wide-ranging mountain views.
Mynydd Mawr via Llyn y Dywarchen
- 5.5 mi
- 4 hrs
A quiet climb from Llyn y Dywarchen with steady paths and scenic lake and mountain views.
What to Know Before You Go
Mynydd Mawr’s ridged paths and steep sections make it a moderately challenging climb, so sturdy boots and weather-appropriate gear are essential. The exposed summit can be windy, so pack layers even on warm days. Mobile reception is patchy, so bring a map and compass, and let someone know your route before setting off.
Why We Love Mynydd Mawr
There’s something truly special about Mynydd Mawr. It’s rugged, wild, and a bit unpredictable, just like Snowdonia itself. The dragon-like ridge gives it a mythical feel, and the relative quiet compared to more famous peaks makes the hike feel like a personal discovery. Whether you’re standing on the summit looking out towards the sea or tracing the shadow of the ridge across the valley, Mynydd Mawr leaves a lasting impression.How to Get to Mynydd Mawr
Mynydd Mawr is located near the village of Rhyd Ddu, west of Snowdon. The most common starting point is the Rhyd Ddu car park (postcode: LL54 6TN), just off the A4085. Parking here is free but can fill up on weekends.
For public transport, the nearest train station is in Caernarfon. From there, take the Snowdon Sherpa bus to Rhyd Ddu. You can also reach Y Fron by bus from Caernarfon, but services can be limited, so check ahead.
A Bit of Mynydd Mawr History
The name “Mynydd Mawr” translates to “Big Mountain” in Welsh, fitting for a peak that dominates the surrounding landscape despite not being the tallest. Historically, the area around Mynydd Mawr was used for slate quarrying, and remnants of old workings can still be seen on the lower slopes.
Local legends suggest that the distinctive ridge shape is reminiscent of a sleeping dragon, giving rise to its nickname. Over the years, Mynydd Mawr has become a favourite for those who appreciate the quieter side of Snowdonia, offering a rugged adventure without the crowds.
Keep exploring
Mynydd Mawr is just one of the many rugged peaks in Snowdonia. Want more mountains with character and epic views? Discover other unforgettable hikes below!