This is a digital 3D topographical model of Camelback Mountain in Phoenix, Arizona; created using Blender, an open source 3D modeling software tool which you may download from the Blender.Org site.
BLEND (Blender, filesize: 249 MB), OBJ (OBJ, filesize: 201 MB), FBX (Autodesk FBX, filesize: 67.3 MB), DAE (Collada, filesize: 548 MB), STL (Stereolithography, filesize: 132 MB)