Ancient Monuments

History on the Ground

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The Holyhead Road: the Ogwen Pass

A Scheduled Monument in Llandygai (Llandygái), Gwynedd

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Latitude: 53.127 / 53°7'37"N

Longitude: -4.0224 / 4°1'20"W

OS Eastings: 264776

OS Northings: 360785

OS Grid: SH647607

Mapcode National: GBR 5V.71C1

Mapcode Global: WH54P.5NVL

Entry Name: The Holyhead Road: the Ogwen Pass

Scheduled Date: 22 November 2004

Source: Cadw

Source ID: 4015

Cadw Legacy ID: CN338

Schedule Class: Transport

Category: Road

Period: Post Medieval/Modern

County: Gwynedd

Community: Llandygai (Llandygái)

Traditional County: Caernarfonshire


The monument comprises the long stretch of revetment walling that accommodates Thomas Telford's Holyhead Road on the E side of Nant Ffrancon, as it rises to reach the Ogwen Pass; and the clearly visible earlier turnpike road beneath. Telford described the new road as follows: This road established through a rugged and mountainous district

Source: Cadw

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