"Pendyffryn" is a 0-4-0 vertical boiler locomotive built by De Winton & Company of Caernarfon in 1894 for the Pen-Yr-Orsedd Slate Quarry. The engine was purchased in 1965 and stored until completion of a full restoration by Pant workshops in 2012. "Pendyffryn" is located in the Pontsticill Museum.