Approx. point 30 U 437045 5860771 - located north/north-east, on the south side of Llyn Trawsfynydd Reservoir.
Approx. point 30 U 437792 5839668 - located south/south-east, on the north-west slopes of Cadair Idris.
Y Llethr is the highest of the mountains known as the Rhinogydd range, but has the least impressive appearance. For some reason there's no cairn at the true summit, but a small pile of stones a little away from the highest point.
Y Llethr seen from Rhinog Fawr.