@cymrurails: ⛰️ No. 10 ‘Yeti’ climbing out of Llanberis on her way up Yr Wyddfa! Built in 1986 and named by local schoolchildren, this diesel powerhouse is always a brilliant sight to watch working the rack railway ✨ #DieselLocomotive #NarrowGauge #SnowdonMountainRailway #YrWyddfa #Llanberis