Its border with the Wirral Peninsula is formed by the river Dee, while other rivers include the Usk and the Afon Goch, which itself contains Aber Falls. The Gower peninsula and the Lliw uplands are found within its county of Swansea, while the Harlech dome is found in the foothills of the Snowdonia Range, which also contains this polity's highest point, Mt. Snowdon. Other 
Its border with the Wirral Peninsula is formed by the river Dee, while other rivers include the Usk and the Afon Goch, which itself contains Aber Falls. The Gower peninsula and the Lliw uplands are found within its county of Swansea, while the Harlech dome is found in the foothills of the Snowdonia Range, which also contains this polity's highest point, Mt. Snowdon. Other members of its Seven Wonders include the Overton Yew trees, St. Giles' church in the city of Wrexham, and the falls of Pistyll Rhaeadr. For 10 points, identify this state of Great Britain whose inhabitants celebrate the eisteddfod, with capital at Cardiff.
Its border with the Wirral Peninsula is formed by the river Dee, while other rivers include the Usk and the Afon Goch, which itself contains Aber Falls.
{Wales} [or {Cymru}]