Sounds like the Onkalo nuclear waste repository in Finland. There's a documentary about it where they talk a bit about the difficulties of marking the site in a

Sounds like the Onkalo nuclear waste repository in Finland. There's a documentary about it where they talk a bit about the difficulties of marking the site in a way that won't just pique someone's curiosity after it's been forgotten. http://www.youtube.com/watch?v=qoyKe-HxmFk http://www.youtube.com/watch?v=qoyKe-HxmFk Unfortunately it's not a very good, or enlightening, documentary. Has its moments though.