On a wooded island more than a hundred miles northwest of Helsinki, in the town of Eurajoki, Finnish engineers are digging a tunnel. When it is done 10 years from now, it will corkscrew three miles in and 1,600 feet down into crystalline gneiss bedrock that has been the foundation of Finland for 1.8 billion years. And there, in a darkness that is still being created, the used fuel rods from Finland’s nuclear reactors - full of radioactive elements from the periodic table as dreamed up by Lord Voldemort, spitting neutrons and gamma rays - are to be sealed away forever, or at least 100,000 years. The place is called Onkalo (Finnish for ‘hidden) and it is the subject of ‘Into Eternity, a new documentary by Mr. Madsen. Watching it during the recent Tribeca Film Festival brought me into a more visceral contact with the vicissitudes of geologic time than I might have really wanted. These days I find that I can barely envision the future more than about six months ahead - hardly enough time even to plan for a proper summer vacation. My images of the deep future have always been vaguely utopian, like ‘Star […]