This work develops a rock mass characterization of a limestone quarry in northern Spain
based on a 3D model obtained by using photographs taken from an unmanned aerial
vehicle (UAV) flight and structure-from-motion algorithms. This methodology permits to
obtain photogrammetric information in a rapid and low-cost way. Geological planar facets
(stratification, faults) are related to the tectonic history of a geological formation and permit
assessing slope stability. The spatial orientation of planar features is usually measured with …