Very easy to find this cairn is it is in the field in front of the House of Dun. Take the A935 west from Montrose and follow the signs to the House. The cairn is in the field and can’t be missed. Several wee information boards give info on the site.
It is 25 meters wide, 1.5 meters high and has a 12 meter flat section on top. Kerbs to poke their noses thru the turf. And as for the lintel left on top I’ve no idea what that’s for :-)
Visited 30/12/2014.