The Mounth (/ˈmʌnθ/ MUNTH)[2] is the broad upland in northeast Scotland between the Highland Boundary and the River Dee, at the eastern end of the Grampians.

To the east the plateau broadens into a lower moorland incised by river valleys, notably Glen Esk and Glen Tanar, descending gently east to North Sea coastal cliffs between Stonehaven and Aberdeen.

[5] The Mounth is thus bounded by Blairgowrie, Braemar, Ballater, Banchory, Stonehaven, and Kirriemuir, and comprises eastern Highland Perthshire, the Angus Glens, and southern Aberdeenshire.

Historically The Mounth was a formidable barrier which, to some extent, isolated the northeast of Scotland from the Scottish Lowlands, physically and culturally.

The route was that taken by Earl Marischal and the Marquess of Montrose when they led a Covenanter army of 9000 men in the first battle of the Wars of the Three Kingdoms in 1639.