This is a 3D Topographical model of Grand Canyon, created using Blender 2.83 Beta
BLEND (Blender, filesize: 374 MB), OBJ (OBJ, filesize: 328 MB), FBX (Autodesk FBX, filesize: 105 MB), DAE (Collada, filesize: 847 MB), STL (Stereolithography, filesize: 200 MB)