Yellowsand Island 0.91
Copy the following command to download the textures (Steam - Proton)
cd ~/.steam/root/steamapps/compatdata/284160/pfx/drive_c/users/steamuser/AppData/Local/BeamNG.drive/0.25/temp/art && wget github.com/SnoutBug/BeamNG_terrainMaterialCache/releases/download/21683/main.tar.gz && tar -xvf main.tar.gz && rm main.tar.gz && cd ~/
www.beamng.com/resources/21683/
Issue #2 Provided by @jconnolly837