Close south of this hill is a second work, lower, smaller, and less clearly defined. Its summit is also circular, and about 100 feet diameter. These two works are of one general type, and probably of one date, and if not the work of Æthelflæda are no doubt of her period. They are either English or Danish, not British. That the main work is older than the Norman fortress is evident from a document of 1299, in which it is called “the old castle.” Moreover, it is the burgh which gives name to Oldbury, the parish in which it is situated. Quatford Castle is on the left bank of the Severn, one and a quarter miles below Bridgenorth, and a furlong from the river, the intervening ground being a strip of meadow, while Danesford is still the name of an adjacent ford and village. A short steep combe descends from the high ground to the north-east, and, branching below, includes a knoll of rock perhaps 150 feet above the valley and 200 feet above the river. The soft red rock has been pared and scarped, and a part of the material employed to give an artificial top to the hill. This is somewhat of an oval, and seems to have had a sort of mound at its east end, now occupied by a modern castellated house. The slopes are steep, especially towards the west, and they are broken by narrow terraces, now walks, but which may have been ditches. The approach is by a sort of causeway on the north-east or least steep side. The summit and sides of the work are converted into a house and gardens, but the general arrangement of the original hill can readily be detected. It must have been very strong, and resembles generally Devizes and similar works of English origin. Probably this is the site of the “nova domus” of Earl Roger, as it was the seat of his English predecessor. It is a very curious work, and deserves to be surveyed on a large scale by the officers of ordnance. It may be mentioned that in the courtyard is a small passage cut in the rock, at an angle of forty-five degrees, and which descends by ninety-four steps to a well, whence the house is supplied. The passage is evidently an addition, the original well shaft descending, as now, vertically from the surface. A little north-west of the castle, towards Bridgenorth, the tail of a piece of detached highish ground has been cut off by a trench, near a place called, in the inch ordnance, “Dog in the Wall.” It seems to have been a light temporary work for the accommodation of a small body of men.