 The Nant Peris valley lies to the northwest descending to the town of Llanberis, the Llyn Peris and Llyn Padarn lakes and continues on as the Afon Rhythallt to Caernarfon and the Menai Strait.The valley is narrow, straight and steep-sided, with rocky crags and boulders on either side of the road.About one mile to the east of Pen-y-Pass is the Pen-y-Gwryd Hotel.