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
Lusatian Border Ridge oak-hornbeam-pine woodland, oak and beech forest and mixed beech-sessile oak-English oak woodland. The Lusatian Border Ridge also forms the boundary between Lower and Upper Lusatia, hence the name, which literally means "Lusatian Border Dyke". Lusatian Border Ridge The Lusatian Border Ridge (), also called the Lusatian Border Wall, is a natural region in Saxony and South Brandenburg. It lies not far from the town of Weißwasser and is bounded in the south and west by the Muskau Heath and in the north by the Cottbus Sand Plateau. To the west it transitions at the River Dahme into the Lower Fläming;