Vrml97ToX3dNist, http://ovrt.nist.gov/v2_x3d.html
X3D-Edit 3.3, https://www.web3d.org/x3d/tools/X3D-Edit
"MarsLOD008.x3d" "https://www.web3d.org/x3d/content/examples/Basic/Geospatial/MarsLOD008.x3d"
"images/Mars002.jpg" "https://www.web3d.org/x3d/content/examples/Basic/Geospatial/images/Mars002.jpg"