The Aberglaslyn Pass () is a narrow gorge of considerable beauty in Snowdonia, Gwynedd, north Wales. The A498 road/A4085 road follows a relatively level route along the Afon Glaslyn through the pass from Beddgelert to Prenteg and then continues at the edge of the Traeth Mawr via Tremadog to Porthmadog. River pass As recently as the early 19th century, the river Glaslyn was navigable for small boats at high tide as far as Pont Aberglaslyn, which is just south of Beddgelert, where a sixth-century monastery was succeeded in the twelfth by an Augustinian priory. In the Middle Ages Beddgelert was seen as a safe resting place before travelling further. The route from the coast via Beddgelert and overland to Caernarfon or Bangor via Llyn Cwellyn was often considered preferable to the long voyage round the Llŷn Peninsula. Pont Aberglaslyn is in the parish of Nantmor. From here to the sea, landowners have benefited significantly from the land reclamation made possible by the construction at Porthmadog in 1812 of the great embankment across the Traeth Mawr estuary, known as The Cob. Pont Aberglaslyn has a bridge with a connection to the Devil. It is very similar to other Devil and bridge-related stories found throughout the British Isles. The Devil built the bridge on the understanding that he would receive the soul of the first living creature to cross over it. When the bridge was finished he went to the local inn (Y Delyn Aur) to inform the magician Robin Ddu that it was ready. Robin went to inspect the new bridge with a dog he lured from the pub with a fresh-baked loaf of bread. Upon seeing the bridge Robin asked the Devil whether it was sturdy and how much weight it could carry as he thought it might not even take the weight of the loaf he was carrying. The Devil was shocked and demanded that the magician throw his loaf onto the bridge to prove that it was indeed strong enough. So Robin threw the loaf onto the bridge and the dog chased it across the bridge, thus cheating the Devil of a human soul. Robin Ddu then returned to the pub to finish his drinking. In another version of this tale, it is a local hotelier who asks Robin to aid him in constructing a bridge and as payment, Robin was to take the soul of the first