This is a topographical, digital 3D model of Squaw_Peak in Phoenix, Arizona, created using Blender; an open source, 3D modeling software tool, which you will find at Blender.Org.
BLEND (Blender, filesize: 96 MB), OBJ (OBJ, filesize: 78.6 MB), FBX (Autodesk FBX, filesize: 29.1 MB), DAE (Collada, filesize: 201 MB), STL (Stereolithography, filesize: 47.4 MB)