Running alongside for part of the way is the trackbed of the old Nantlle Tramway, along which horse-drawn trams carried slates from the quarries in the Nantlle Valley to the port at Caernarfon from where they were exported.
A portion of the route follows the path of the former Nantlle Tramway, a track that once carried horse-drawn trams loaded with slate from quarries in the Nantlle Valley to the port at Caernarfon for shipment abroad.