In the near future, multiple permanent repositories for nuclear waste will be put into operation throughout the whole world.
Their long-term security has been and stays a subject of heated discussions, since nuclear waste can still be dangerous to the biosphere even in tens of thousands of years. How can unvoluntary trespassing into the security zones be prevented? Wars, diseases and disasters might lead to the loss of the knowledge about permanent repositories or radioactivity. Even generations in the far future have to be able to easily understand the warnings about our deadly legacy. In this conceptual approach, a variety of glass artifacts are scattered in the surrounding area of a permanent nuclear repository. They serve both as physical barrier and durable warning messages for generations to come.