 The study uses multi-view stereopsis techniques to produce a dense point cloud from imagery acquired by a micro UAV of a natural coastal site in Tasmania, Australia. The results indicate that a geo-referenced point cloud accurate to 25 to 40 millimeters can be obtained from imagery acquired from 50m, and sub-decimeter terrain change can be monitored using UAV-based image capture. This article was authored by Arco Lucia and Steve Harwin.