Pen yr Ole Wen

Pen yr Ole Wen is a 978-meter mountain summit in Snowdonia that marks the start of the Carneddau range, with steep slopes rising above Llyn Ogwen lake. The peak is topped by a cairn and overlooks both Gwynedd and Conwy counties.

Mountain routes across Pen yr Ole Wen developed during the 19th century when Victorian mountaineers began exploring Welsh peaks methodically. Those early expeditions established the paths that visitors use today.

The Welsh name Pen yr Ole Wen translates to 'Head of the White Promontory', referring to the pale rock formations visible from the valleys below. The name shows how the local landscape is understood and described by those who live near it.

Multiple hiking routes lead to the summit, with the most direct path starting at Ogwen Cottage and ascending roughly 800 meters over rough ground. Mountain weather can change quickly, so proper gear and preparation are necessary.

The mountain serves as a natural border between Gwynedd and Conwy counties, positioned where the local geology shifts notably. This makes it a special spot for understanding the different rock types that define each region.

Location: Conwy County Borough

Location: Gwynedd

Elevation above the sea: 978 m

Part of: Snowdonia National Park

GPS coordinates: 53.13760,-4.01061

Latest update: December 10, 2025 20:09