La Ciudadela (La Quemada, Zacatecas, Mexico): Down-sampled 3D Photogrammetric Mesh & Extended Matrix Paradata (v1.0)

Down-sampled 3D mesh of La Ciudadela (La Quemada, Zacatecas, Mexico) derived from UAV photogrammetry (SfM/MVS) and optimized for web visualization and peer review. Includes OBJ geometry and texture maps (normal, ambient occlusion, diffuse/RGB), as well as minimal paradata linking Reconstruction Model units in a Blender file to the Extended Matrix (EM) graph. Scale preserved; Intended for evidence-aware viewing and review; authoritative high-res assets available from authors on request per heritage custodial policy.