Created from open LiDAR data https://diffusion-lidarhd.ign.fr/

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3D videos at https://www.youtube.com/playlist?list=PLeZH6zvJosTnH21cTZbPjYoY0gsrlx-YA
3D models at https://sketchfab.com/hillforts/collections/france-hillforts-f3a8851317e84e3c851898ef7ab76d48