Hopefully these questions will have found answers before the facility is finished 120 years from now.
But can we ensure that? How is it possible to warn future man of the waste we left behind? How do we prevent them from thinking they have found the pyramids of our time, mystical burial grounds, hidden treasures? Which languages and signs will they understand, and if they understand, will they respect our instructions? When the waste has been deposited, the facility will be sealed off, never to be opened again. To succeed with that is vital in order to keep future man safe and prevent the waste from escaping into the biosphere. The real challenge, however, is to secure the facility from human intrusion. Not only must the facility last 10 times longer than any manmade construction ever, it must also be able to resist all thinkable climate changes, erosion, evolution.
The tunnels will be filled with high-level radioactive waste, which must be kept isolated from human beings and other live organisms for at least 100.000 years into the future, not to render large areas uninhabitable. These are the sentences that future man will meet, if he finds and opens the gigantic network of underground tunnels, which presently are hewn out of the bedrock in Finland. The danger will still be present in your time, as it is in ours.”
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