Gully erosion in agrosilvopastoral systems of SW Spain represents a common degradation process. but has been hardly analysed. The suitability of using the Unmanned Aerial Vehicles (UAV) and Structure from Motion photogrammetry (SfM) workflow to map small valley-bottom gullies in these landscapes was tested. The results showed centimetre-level accuracy. https://www.roneverhart.com/275-55R20-X-FIT-AT/