Throughout history, there has been extensive research performed on the Hawkesbury Sandstone, however, little has been done within academic literature on the fracture networks throughout it, specifically on their influence on groundwater flow and storage. The regional deformation is also believed to be due to basement control, with little research performed on alternate theories of deformation. This study aims to develop a better understanding of the fracture networks in the Hawkesbury Sandstone and how fractures may contribute to the flow pathways between underground and groundwater systems. It also aims to determine the possibility of an alternate theory for regional deformation, in the form of detachment folding. This study was conducted on the Southern Highlands of New South Wales, with a key focus on three rock outcrops at Yanderra. Photogrammetry models were developed which were then uploaded to a 3D geological software program (IPM-MOVE™) for geological interpretation. The esta