Brecon Mountain Railway - Sybil. Sybil is an 0-4-0 saddle tank loco, built by Hunslet Engine Co of Leeds in 1903, works No.827 and used at Pen-Yr-Orsedd Slate Quarry, Nantlle near Caernarfon, North Wales until 1959. She was purchased in 1963 and rebuilt, being used to haul the trains from Pant in 1980. Out of use since 1981, Sybil was restored in 2012; requiring extensive work on the boiler before she was serviceable again. She is, however, too small to haul regular trains on the line. This is the Steam Museum at Pontsticill and some of the stationary steam engines are seen along the left hand wall.