Roman Britain in 1914 - Francis J. Haverfield - Duvar Kitabevi

On other parts of the Wall Dr. Macdonald has gained further successes. Evidence seems to be coming out as to the hitherto missing forts of Kirkintilloch and Inveravon. More details have been secured of the fort at Mumrills— fully 4-1/2 acres in area and walled with earth, not with the turf or stone employed in the ramparts of the other forts of the Wall. The line of the Wall from Falkirk to Inveravon, a distance of four miles, has also been traced; it proved to be built of earth and clay, not of the turf used in the Wall westwards. Dr. Macdonald suggests that the eastern section of the Wall lay through heavily wooded country,where turf was naturally awanting.