. "585.4"^^ . . . . . "27.919"^^ . . . . "The River Usk (Welsh: Afon Wysg) rises on the northern slopes of the Black Mountain of mid-Wales, in the westernmost part of the Brecon Beacons National Park."@en . . . . . . . "Afon Wysg"@en . . . . . . . . . . . "0.0"^^ . . . "River Usk"@en . . . . . "502.0"^^ . "1.58"^^ . .