The Clach nam Breatann (or Minvircc) is a large stone which marked the boundary between

Dál Riata Dál Riata or Dál Riada (also Dalriada) () was a Gaels, Gaelic Monarchy, kingdom that encompassed the Inner Hebrides, western seaboard of Scotland and north-eastern Ireland, on each side of the North Channel (Great Britain and Ireland), North ...

Alt Clut Dumbarton Castle (, ; ) has the longest recorded history of any stronghold in Scotland. It sits on a volcanic plug of basalt known as Dumbarton Rock which is high and overlooks the Scottish town of Dumbarton. History Dumbarton Rock was forme ...

and the homeland of the

Picts The Picts were a group of peoples in what is now Scotland north of the Firth of Forth, in the Scotland in the early Middle Ages, Early Middle Ages. Where they lived and details of their culture can be gleaned from early medieval texts and Pic ...

in what is now Scotland. The Stone still stands, on the slopes of Glen Falloch, between

Crianlarich Crianlarich (; ) is a village in Stirling council area and in the registration county of Perthshire, Scotland, around north-east of the head of Loch Lomond. The village bills itself as "the gateway to the Highlands". Etymology The name ''Cria ...

and Inverarnan. The base circumference is and height . There is another boundary stone in Ben Donich, called ''Clach A' Bhreatunnaich''.

References

{{Coord, 56, 21, 26.99, N, 4, 41, 35.24, W, display=title Scotland in the Early Middle Ages Boundary markers