The OpenSceneGraph website has been replaced
The OpenSceneGraph website has been replaced. You can access the new site at https://openscenegraph.github.io/openscenegraph.io.
However, an archive of the old site was made before this happened, and the URL you requested is available as https://openscenegraph.github.io/OpenSceneGraphDotComBackup/OpenSceneGraph/www.openscenegraph.com/downloads/stable_releases/OpenSceneGraph-3.4.0/data/OpenSceneGraph-Data-3.4.0.zip.
The URL may have been archived on The Wayback Machine. If so, a widget will appear below: