South Stack Clifftop Walk

South Stack sits on Anglesey's far northwestern tip, where dramatic cliffs of pre-Cambrian rock plunge into the Irish Sea and the white-painted lighthouse perches on a rocky islet connected by a long flight of steps. This 5km circuit follows the cliff-top paths around Holyhead Mountain and the RSPB reserve at South Stack, with 220 metres of ascent across terrain that includes coastal paths, stone steps and uneven ground. The cliffs are home to thousands of breeding seabirds in spring and summer, with razorbills, guillemots, puffins and choughs all visible from the path. The landscape is raw, windswept and spectacular, with the sea visible on three sides.

Off-lead potential on this dog friendly walk is limited as the cliff edges are steep, unfenced and extremely dangerous. Dogs must be kept on leads throughout the cliff-top sections. The coastal wind carries powerful salt and seabird scent, and the exposed rock and maritime heathland create an intense sensory environment. Livestock risk is low on the headland. The RSPB visitor centre at Ellin's Tower provides information on the breeding seabirds and has basic facilities. Parking is available at the South Stack car park. Holyhead town is a short drive with several dog-friendly pubs. The walk is most rewarding during the spring and summer breeding season when the cliff faces are alive with birds, but the dramatic geology impresses year-round.