The monument includes the remains of a motte and bailey castle situated on a low ridge on the south side of Rea Brook. The castle is positioned to overlook the natural valley routeway from Shrewsbury in the north east to Montgomery in the south west. It includes a substantial earthen mound, or motte, circular in plan with a base diameter of 32m standing up to 4.6m high. The circular summit of the mound is 9m in diameter and shows slight traces of mortared masonry walls with scattered stone rubble indicating that a building once occupied the summit. The motte stands on the summit of the ridge, the hillslope surrounding it has been cut back to create a well defined scarp up to 1.8m high enclosing an oval area of roughly level ground. The largest portion of this enclosure extends to the north of the motte and would have functioned as a bailey, a defended area in which the domestic buildings associated with the castle would have stood. It has dimensions of 35m north to south by 42m transversely. The bailey scarp continues to the south of the motte to enclose the tail of the spur, forming a small triangular area of defended ground. Although this could have been used in a similar fashion as the main bailey, it appears to have been principally designed to give additional defensive strength to the motte in this quarter. There are no visible surface traces of ditches surrounding either motte or bailey though they will survive as buried features. Sections of boundary hedges within the area are not included in the scheduling although the ground beneath is included. (EH scheduling report 1995)