Archive6516642Title74_122_0231 - Ordnance Survey Vertical Aerial Photography CollectionLevelItemDescriptionBlack and white aerial photograph of Maesllan farm, St. Llawddog's farm and Tomenlawddog motte and bailey, taken by the Ordnance Survey on 13th June 1974, at an altitude of 7,700 feet. Grid reference SN3536. Print enlargement (c. 20") taken from 9" film roll.MediumPhoto.Imagesn