Hamilton Hill is a prominent landscape feature in the District of Ashfield and the parish of Sutton in Ashfield. The hill is ovoid, with steep sides and a generally level top, except to the east where the hill-top has been excavated in a roughly triangular area. In this lowered area, a circular mound has been raised. There are signs that there have been excavations into the top of the mound. The topographic survey recorded tops and bottoms of slopes for the mound and hollow, and also for the bank and ditch which encircles the bottom of the hill. A hachure plan was produced to show these features. Areas where there appeared to be slumping were given a higher density of recorded points, and the rest of the hill was covered in a grid of points 3m apart, to provide a systematic coverage of the hill. The work was undertaken to the appropriate standards and guidance. The point data was converted into 3d models using MapInfo GIS. These were resurveyed in 2011, at which point there had been no additional movement. The topographic survey has not provided a decisive answer as to the purpose and function of the mound, but does seem to positively indicate that it is unlikely to be a barrow or a motte, both of which have been postulated.