Tomb of the Blue Demons (dei Demoni azzurri) in Tarquinia, Necropolis of Monterozzi was discovered in 1985. V century BC.
See:
- Stephan Steingräber, Abundance of Life. EtruscanWall Painting, 2006
- http://3dom.fbk.eu/repository/files/3dicons/etruscan_tombs/blue_demons_tomb/tombofthebluedemons_mainlp_images_FBK.html
- http://www.mysteriousetruscans.com/tardemons.html