A 3D photogrammetric model of a partially collapsing Post-medieval wall located perpendicular to the north curtain wall of Neath Castle. Scaffolding supporting the wall has been removed in the point cloud to gain a better view of the wall and its phasing. Some ‘ghosting’ of the removed scaffolding can be seen in the 3D mesh. The dense point cloud generated over 55 million points with a mean RMS error of 0.012m. The Ground Sampling Distance achieved a great 0.31cm/pixel. Special thanks to Cadw, Neath Town Council, Hurley & Davies and Taliesin Conservation.