Gallt y Wenallt is a subsidiary summit of Y Lliwedd in Snowdonia National Park, north Wales.
Gwynedd is a county in Wales, sharing borders with Powys, Conwy, Anglesey over the Menai Strait, and Ceredigion over the River Dyfi.
The mountains and hills of Great Britain, and to a lesser extent Ireland, are the subject of a considerable number of lists that categorise them by height, topographic prominence, or other criteria.
North Wales (Gogledd Cymru) is an unofficial region of Wales.
Ordnance Survey (OS) is a national mapping agency in the United Kingdom which covers the island of Great Britain.
Snowdonia (Eryri) is a mountainous region in northwestern Wales and a national park of in area.
Welsh (Cymraeg or y Gymraeg) is a member of the Brittonic branch of the Celtic languages.
Y Lliwedd is a mountain, connected to Snowdon in the Snowdonia National Park, North Wales.