Augmented Reality as a Tool for Promoting the Tourist Value of the Geological Heritage Around Natural Filming Locations: a Case Study in “Sad Hill” (The Good, the Bad and the Ugly Movie, Burgos, Spain)

1. González-Delgado, J.Á.
2. Martínez-Graña, A.
3. Holgado, M.
4. Gonzalo, J.C.
5. Legoinha, P.