Pen yr Helgi Du

About Pen yr Helgi Du

Standing as a distinctive, pointed outlier of the eastern Carneddau, this high peak offers a quieter perspective on the range. It is defined by its dramatic connection to Carnedd Llywelyn via the narrow, rocky arête of Bwlch Eryl Farchog, looking directly down into the deep waters of Ffynnon Llugwy.

Key Statistics

Find It

Did You Know?

• •The name Pen yr Helgi Du translates from Welsh as 'Head of the Black Hound.' While the specific legend has been lost to time, such names in the Carneddau often relate to the medieval hunting grounds of Welsh princes.
• •The most popular ascent follows the long southern spur of Y Braich, a steady, grassy climb that serves as a perfect warm-up before the terrain narrows significantly at the summit.
• •The summit provides a grandstand view of the 'back side' of Tryfan; from here, the mountain's famous shark-fin profile is replaced by a complex, vertical wall of rock and heather above the Ogwen Valley.
• •The traverse to Carnedd Llywelyn requires navigating the rocky step of Bwlch Eryl Farchog, a short but exhilarating scramble that feels surprisingly alpine compared to the broad, rolling plateaus found elsewhere in the range.
• •The scramble across the bwlch is frequently described as 'straightforward' in guidebooks, a term that usually feels optimistic the moment a sudden Welsh mist turns the rhyolite into an ice rink.