Wark on Tweed Wark on Tweed Wark on Tweed (usually referred to simply as Wark) is a village in the English county of Northumberland. It lies approximately south west of Berwick-upon-Tweed. It is on the south bank of the River Tweed which marks the border between England and Scotland. The ruins of Wark on Tweed Castle, originally an early 12th century motte-and-bailey, lie at the west end of the village. The border between Scotland and England runs down the middle of the River Tweed, however between the villages of Wark and Cornhill the Scottish border comes south of the river to enclose a
River Esk, Dumfries and Galloway River Esk, Dumfries and Galloway The River Esk (), also called the Border Esk, is a river in Dumfries and Galloway, Scotland, that flows into the Solway Firth. It also flows for a small way through the English county of Cumbria before entering the Solway. The river rises in the hills to the east of Moffat and its two main tributaries, the Black Esk and the White Esk, merge at the southern end of Castle O'er Forest. It flows south east through Eskdale past Langholm before merging with Liddel Water (which defines the border between Scotland and England. Before passing