Bwlch y Groes (Welsh for 'pass of the cross') is the second highest public road mountain pass in Wales,[1] with a summit altitude of 545 metres (1,788 ft).
It lies on minor roads linking Dinas Mawddwy (via Llanymawddwy), Llanuwchllyn and Lake Vyrnwy.
[2] The cross, just below the summit at the junction of the roads from Vyrnwy and from Dinas Mawddwy, commemorates the place of the pass on a pilgrim route from north Wales.
In 1926 BSA undertook a continual test resulting in the company being awarded by the Auto-Cycle Union the Maudes Trophy for 60 ascents of the pass.
Between 1933 and 1954 the International Six Days Trial passed over the Bwlch y Groes and its neighbouring roads along the Eunant and Cwm Hirnant.