Y Garn is Welsh for the cairn or the rock and is the name of several hills in Wales. Y Garn (Glyderau), 947 meters in northern Snowdonia Y Garn (Nantlle Ridge), 633 meters in central Snowdonia Y Garn (Rhinogydd), 629 meters in southern Snowdonia Y Garn (Plynlimon), 684 meters in Mid Wales